Updated on 2022/03/25

写真a

 
IWANO Koji
 
Organization
Graduate School of Engineering Mechanical Systems Engineering 1 Assistant Professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Mechanical and Aerospace Engineering
Title
Assistant Professor

Degree 1

  1. 博士(工学) ( 2014.3   京都大学 ) 

Research Interests 25

  1. Aeroacoustics

  2. Turbulence boundary layer

  3. 数値流体力学

  4. Turbulent mixing

  5. LIF

  6. MEMS sensor

  7. Chemical reaction

  8. Hot-wire

  9. Aeroacoustics

  10. 風波

  11. 環境流体力学

  12. 大気海洋相互作用

  13. 地球温暖化

  14. 台風

  15. 二酸化炭素

  16. 乱流物質輸送

  17. 乱流熱輸送

  18. 乱流境界層

  19. 乱流拡散

  20. 乱流混合

  21. 実験流体力学

  22. 微小スケール計測

  23. 数値流体力学

  24. 混相流

  25. 高Sc数

Research Areas 5

  1. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Fluid engineering

  2. Natural Science / Atmospheric and hydrospheric sciences

  3. Energy Engineering / Earth resource engineering, Energy sciences

  4. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Chemical reaction and process system engineering

  5. Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Transport phenomena and unit operations

Current Research Project and SDGs 2

  1. 乱流混合のメカニズム解明

  2. 乱流境界層のメカニズム解明と抵抗低減

Research History 2

  1. Nagoya University   Graduate School of Engineering Mechanical Systems Engineering 1   Assistant Professor

    2017.4

  2. Nagoya University   Graduate School of Engineering Department of Mechanical Science and Engineering Environment and Energy Engineering   Assistant Professor

    2014.10 - 2017.3

Education 2

  1. Kyoto University   Graduate School, Division of Engineering

    2009.4 - 2014.3

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    Country: Japan

  2. Kyoto University   Faculty of Engineering

    - 2009.3

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    Country: Japan

Professional Memberships 5

  1. 日本機械学会

  2. 化学工学会

  3. 可視化情報学会

  4. 可視化情報学会

  5. 日本機械学会

Awards 4

  1. 2020年度日本機械学会東海支部賞 奨励賞

    2020.3   日本機械学会東海支部   光ファイバを用いた高空間分解能濃度計測技術の開発と高シュミット数物質の乱流拡散・混合現象の解明

    岩野耕治

  2. 日本機械学会東海支部特別功労賞

    2020.3   日本機械学会東海支部  

    岩野耕治

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    Award type:Award from Japanese society, conference, symposium, etc. 

  3. 研究賞

    2018.3   日本機械学会東海支部  

    伊藤靖仁, 三浦健介, 岩野耕治, 酒井康彦

  4. 日本機械学会流体工学部門 最優秀講演表彰

    2011.9   日本機械学会流体工学部門  

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    Country:Japan

 

Papers 59

  1. Power spectrum of high Schmidt number scalar in a turbulent jet at a moderate Reynolds number Reviewed

    Koji Iwano, Jumpei Hosoi, Yasuhiko Sakai, Yasumasa Ito

    Experiments in Fluids   Vol. 62 ( 6 )   2021.6

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s00348-021-03216-5

    Web of Science

    Scopus

    Other Link: https://link.springer.com/article/10.1007/s00348-021-03216-5/fulltext.html

  2. Effect of Schmidt number in planar jet with chemical reaction by DNS Reviewed

    KITO Kenji, IWANO Koji, SAKAI Yasuhiko, ITO Yasumasa

    Transactions of the JSME (in Japanese)   Vol. 87 ( 897 ) page: 21 - 00043-21-00043   2021

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    Authorship:Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Japan Society of Mechanical Engineers  

    <p>A direct numerical simulation (DNS) of a planar jet with a second-order chemical reaction is performed using four different Schmidt number (<i>Sc</i> = 1, 2, 4, 8). Reactant A is contained in the jet flow and reactant B is contained in the ambient flow. The chemical reaction ( A + B → P ) proceeds by molecular mixing of the two reactants in the jet. The results show that the higher <i>Sc</i> becomes, the finer the structure of the product concentration becomes. The region where the reaction occurs changes depending on the <i>Sc</i>. Mean concentration and mean production rate conditioned on the distance from the T/NT (Turbulent/Non-Turbulent) interface is calculeted. The change in the conditional mean concentration of the reactive species near the T/NT interface occurs within the order of Taylor's microscale regardless of the difference in <i>Sc</i>. In the chemical reaction field, the slope of the concentration change at T/NT does not differ much depending on the <i>Sc</i>. When the <i>Sc</i> is high, the mean production rate decreases. This is because the molecular diffusion is weak and small-scale concentration fluctuation occurs at high Sc. It also found that the thickness of the reaction layer becomes thinner as the <i>Sc</i> increases and the thickness of the reaction layer is scaled on the Bachelor scale <i>η</i><sub>B</sub>.</p>

    DOI: 10.1299/transjsme.21-00043

  3. High spatial resolution/high SN ratio measurement of concentration by optical fiber LIF method Reviewed

    IWANO Koji, SUZUKI Koji, SAKAI Yasuhiko, ITO Yasumasa

    Transactions of the Visualization Society of Japan   Vol. 39 ( 6 ) page: 28 - 34   2019

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Visualization Society of Japan  

    <p>  Optical fiber laser induced fluorescence (OFLIF) probe was developed for high spatial resolution and high SN ratio measurement of concentration fluctuation in liquid phase turbulent flows. The advantage of the OFLIF method is the very small path length of incident laser. The calibration curve showed high linearity up to about 30 μmol/L for Rhodamine 6G solution which is about 1,000 times higher than the maximum concentration for conventional LIF method. This enables us to use the fluorescence dye with much higher concentration than conventional LIF method. The OFLIF was applied to concentration measurement in an aqueous axisymmetric turbulent jet. The result showed that the spatial resolution and SN ratio are enough to discuss the spectral shape near Bachelor scale. The measured spectra supported -1 power law predicted by Bachelor and Kraichnan.</p>

    DOI: 10.3154/tvsj.39.28

  4. Scalar mixing near the turbulent/non-turbulent interface in the planar liquid jet with chemical reaction Reviewed

    IWANO Koji, NAKAGAWA Kota, SAKAI Yasuhiko, ITO Yasumasa

    Transactions of the JSME (in Japanese)   Vol. 85 ( 878 ) page: 19 - 00198-19-00198   2019

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Japan Society of Mechanical Engineers  

    <p>Chemical reaction near turbulent/non-turbulent (T/NT) interface in liquid phase turbulent flow was investigated experimentally. The concentrations of reactive species near the T/NT interface in a planar liquid jet with a second-order chemical reaction A+B → R was measured with different stoichiometric mixture ratios. The reactants A and B were premixed into the jet and ambient flows, respectively. The optical fiber probe based on the light absorption spectrometry was used to measure the instantaneous concentrations of the reactive species. The T/NT interfaces were separated into two types (i.e. leading edge and trailing edge) and investigated separately. Mean concentration conditioned on the distance from the T/NT interface was calculated. It was found that the thickness where large concentration change of the reactive species occurs are order of Taylor's microscale and does not depend on stoichiometric mixture ratio. In addition concentration profile of product R near the T/NT interface does not depend on stoichiometric mixture ratio, while equilibrium limit clearly depend on stoichiometric mixture ratio. This means that near the T/NT scalar mixing does not reach molecular level and chemical reaction is not active.</p>

    DOI: 10.1299/transjsme.19-00198

  5. Effect of Artificial Large-scale Motions on Bursting in Turbulent Boundary Layer Reviewed

    Xiaonan Chen, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    Proceedings of the 7th International Conference on Jets, Wakes and Separated Flows 2022     page: 40 - 414   2022.3

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

  6. Chemical reaction of high Schmidt number scalars in a turbulent planar wall-jet Reviewed

    Koji Iwano, Soma Nagaya, Yasuhiko Sakai, Yasumasa Ito

    Proceedings of the 7th International Conference on Jets, Wakes and Separated Flows 2022     page: 296 - 300   2022.3

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

  7. A Study on Flow Structure and Noise Generation in a Separated-and-Reattaching Flow in Sirocco Fan Reviewed

    Kosuke Seto, Koji Iwano, Yasumasa Ito, Yasuhiko Sakai, Masaharu Sakai, Shuzo Oda Fumiya ishii Sho, Kosaka Jun Yamaoka

    Proceedings of the 7th International Conference on Jets, Wakes and Separated Flows 2022     page: 711 - 717   2022.3

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

  8. The meandering bend features of large-scale structures and the related coherent structures Reviewed

    Xiaonan Chen, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    International Journal of Heat and Fluid Flow   Vol. 93   page: 108915 - 108915   2022.2

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.ijheatfluidflow.2021.108915

    Scopus

  9. Measurement of High Schmidt Number Scalar Mixing in Grid Generated Turbulence

    Koji Iwano, Michihiro Suzuki, Yasuhiko Sakai, Yasumasa Ito

    Proceedings of Eighteenth International Conference on Flow Dynamics     page: 605 - 606   2021.10

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

  10. Numerical Investigation about Inverse Cascade Phenomenon in Mixing Layer

    Muyang Wang, Yasumasa Ito, Takumi Okawa, Koji Iwano, Yasuhiko Sakai

    Proceedings of Eighteenth International Conference on Flow Dynamics     page: 586 - 589   2021.10

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    Language:English   Publishing type:Research paper (international conference proceedings)  

  11. CFD Study on the Efficacy of Flow Diverter Stent Placement for Cerebral Aneurysms Reviewed

    Y. Ito, I. Cho, Y. Sakai, K. Iwano

    Journal of Applied Fluid Mechanics   Vol. 14 ( 5 ) page: 1547 - 1558   2021.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    The effect of flow diverter (FD) stent placement as a cerebral aneurysm treatment on hemodynamics was systematically investigated via numerical simulation. The aneurysm diameter was set to 8 mm and 12 mm, with an aspect ratio (AR) of 1.2 and 1.9, respectively. The curvature of the parent artery was also varied for the following three types: straight, inside, and outside. The blockage ratio of the FD stent was set to 31 %. The results reveal that, regardless of artery shape, the FD stent drastically modifies the flow in the aneurysm, including changing the flow direction in the systolic phase. In most cases, the flow rate into the aneurysm is significantly reduced by the stent; however, in the case of a straight artery, the flow rate is increased for the aneurysm model with AR = 1.9. The oscillatory shear index (OSI) generally increases owing to FD stent placement while the wall shear stress is substantially decreased. In particular, a high OSI area is widely distributed in the large aneurysm sac (AR = 1.9) for straight and internal artery cases. Although idealized aneurysm models are employed in the present study and further parametric studies are required, particularly with respect to stent configuration, these facts may explain the unexpected outcome in some (but not all) large aneurysm cases.

    DOI: 10.47176/jafm.14.05.32454

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  12. Effect of large-scale structures on bursting phenomenon in turbulent boundary layer Reviewed

    Xiaonan Chen, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    International Journal of Heat and Fluid Flow   Vol. 89   2021.6

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE INC  

    This study investigated the effect of large-scale structures including large-scale motions (LSMs) and hairpin vortex in the log-region on the bursting phenomenon in the buffer layer using the simultaneous measurement of the streamwise velocity fluctuation in the log-region and buffer layer of the turbulent boundary layer (TBL) with a multi-channel hot-wire probe. The Reynolds number in the present study, calculated from the friction velocity uτ, was Reτ=δuτ/ν=1260, where δ is the boundary layer thickness and ν is the kinematic viscosity. The LSMs were classified as positive large-scale motions (pLSMs) and negative large-scale motions (nLSMs) based on their streamwise velocities. Their effect on the bursting that was detected by the Variable-Interval Time-Averaging (VITA) technique was visualized. As a result, it was evident that the bursting became active with the existence of the pLSMs, while it was suppressed with the nLSMs. In addition, hairpin vortex was observed by applying the VITA technique to the velocity fluctuation of the log-region. Further investigation revealed that the hairpin vortex can also be observed in the log-region with the condition that the bursting was detected in the buffer layer, suggesting that the existence of a hairpin vortex in the log-region slightly increased the bursting phenomenon near the wall.

    DOI: 10.1016/j.ijheatfluidflow.2021.108811

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  13. Fluid Dynamics and Energy/scalar Transport in Coexisting Flows of Turbulence and Non-turbulence:Cases of Dual-wake Flow and Plane Jet Reviewed

    Yasuhiko Sakai, Yasumasa Ito, Koji Iwano

    Proceedings of Seventeenth International Conference on Flow Dynamics     page: CRF-100 - CRF-100   2020.10

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    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)  

  14. Effect of the Meandering of Large-Scale Motions on Bursting Phenomenon in Turbulent Boundary Layer Reviewed

    Xiaonan Chen, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    Proceedings of Seventeenth International Conference on Flow Dynamics     page: 376 - 376   2020.10

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

  15. Inter-scale Transfer of Turbulent Energy and Scalar in Grid Turbulence Reviewed

    Yasumasa Ito, Takuya Yurikusa, Yasuhiko Sakai, Koji Iwano

    Proceedings of Seventeenth International Conference on Flow Dynamics     page: 430 - 430   2020.10

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    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)  

  16. Measurement of High Schmidt Number Scalar Mixing Reviewed

    Koji Iwano, Michihiro Suzuki, Yasuhiko Sakai, Yasumasa

    Proceedings of Seventeenth International Conference on Flow Dynamics     page: 446 - 446   2020.10

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)  

  17. Budgets of Turbulent Kinetic Energy and Reynolds Normal Stresses in Coaxial Jets with and Without Swirl: A Numerical Study Reviewed

      Vol. 9   page: 32 - 42   2020.9

  18. Momentum Diffusion Near Jet Exit in a Round Jet Controlled by Half Delta-Wing Tabs Reviewed

    Yasumasa Ito, Kosuke Naganawa, Yasuhiko Sakai, Koji Iwano

    Flow, Turbulence and Combustion   Vol. 105 ( 3 ) page: 715 - 734   2020.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:SPRINGER  

    Direct numerical simulations for a round jet controlled by half delta-wing tabs are performed to elucidate the transition of turbulent diffusion near the jet exit. The aim also involves clarifying the function of the tabs in round jet control. The jet Reynolds number is set as 10,000. The number of the tab is set to 3 and 6. The results reveal that the installation of the tabs generally decreases the turbulent diffusion coefficient except immediately after the jet exit of x/ d< 1.5 , where x is the streamwise direction and d is the diameter of the jet exit. The magnitude relation of the turbulent diffusion coefficient between the behind-the-tab area and between-the-tabs area changes along the streamwise direction in the upstream region of x/ d< 4. Also turbulent diffusion does not always follow the conventional gradient-diffusion model there. On the other hand, in the downstream region of x/ d≥ 4 , the difference in terms of the turbulent diffusion coefficient disappears between the two areas. However, the jet shape is triangular in the case of three tabs due to the remaining streamwise vortices generated by the tabs. This fact leads to the larger mean velocity gradient and momentum transport in the behind-the-tab area than those in the between-the-tabs area. Conversely, in the case with six tabs, the turbulent diffusion coefficients at the two areas become almost identical in the downstream region because the jet shape approaches a round shape.

    DOI: 10.1007/s10494-020-00129-x

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    Scopus

  19. Intestinal flow after anastomotic operations in neonates

    Ito Yasumasa, Asato Koichiro, Cho Inhyeok, Sakai Yasuhiko, Iwano Koji, Tainaka Takahisa, Uchida Hiroo

    COMPUTERS IN BIOLOGY AND MEDICINE   Vol. 118   page: 103471   2020.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.compbiomed.2019.103471

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    PubMed

  20. Application of spectral proper orthogonal decomposition to velocity and passive scalar fields in a swirling coaxial jet

    Kadu Pravin Ananta, Sakai Yasuhiko, Ito Yasumasa, Iwano Koji, Sugino Masatoshi, Katagiri Takahiro, Hayase Toshiyuki, Nagata Koji

    PHYSICS OF FLUIDS   Vol. 32 ( 1 )   2020.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.5131627

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  21. Generation of artificial large-scale structure in turbulent boundary layer by using plasma actuator.

    YAMAGUCHI Kohei, IWANO Koji, CHEN Xiaonan, SAKAI Yasuhiko, ITO Yasumasa

    The Proceedings of Mechanical Engineering Congress, Japan   Vol. 2020 ( 0 )   2020

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Japan Society of Mechanical Engineers  

    <p>A plasma actuator is applied to generate an artificial Super Structure in the turbulent boundary layer. The large scale streamwise vortical motion is produced by the two planar jets collision which is driven by actuators. The multi-point streamwise velocities in the logarithmic region are measured by using a Rake with a span-wise array of 9 channel I-type hot wire. It is found that the mean velocity with plasma actuator is slower than without plasma actuator. The mean velocity decreases as the applied voltage of actuator becomes larger. It may be an effect by the vertical flow induced by the actuators, i.e., the low-speed fluid is brought up from the near-wall region. This result shows that there is a possibility that an artificial Super Structure is successfully generated in the turbulent boundary layer.</p>

    DOI: 10.1299/jsmemecj.2020.S05428

  22. The effect of the shear layer between large scale motions on bursting phenomenon in turbulent boundary layer

    CHEN Xiaonan, IWANO Koji, SAKAI Yasuhiko, ITO Yasumasa

    The Proceedings of the Fluids engineering conference   Vol. 2020 ( 0 ) page: OS02 - 2   2020

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:The Japan Society of Mechanical Engineers  

    <p>In this study, the effect of the shear layer existing between large-scale motions (LSMs) on bursting phenomenon in turbulent boundary layer (TBL) was investigated by wind tunnel experiment. The TBL was generated on the flat plate made of Bakelite with a zero pressure gradient. The Reynolds number based on friction velocity given by <i>Re<sub>τ</sub></i> = u<sub>τ</sub><i>δ</i>/<i>ν</i> is about 1260. A self-made multi-point hot-wire probe consisting of a hot-wire Rake and a single I-type hot-wire probe was adopted. The hot-wire Rake was used to extract the LSMs from the fluctuation velocity distribution in the log-region in TBL. And the shear layer was considered to exist between the positive large-scale motion (pLSM) and the negative large-scale motion (nLSM). The bursting phenomenon was detected by VITA technique from the fluctuation velocity measured by the single I-type hot-wire probe installed under the center of the Rake in the buffer layer in the TBL. To evaluate the effect of the shear layer on bursting phenomenon, the bursting frequency under several different conditions was calculated. It was found that the bursting frequency has increased 20% with the existence of the shear layer. A further investigation showed that these increased bursting phenomena were related to the leg of the hairpin vortex.</p>

    DOI: 10.1299/jsmefed.2020.OS02-02

  23. Semi in-situ measurement of zincate ion concentration near zinc anode using background-oriented Schlieren technique Reviewed

    Yasumasa Ito, Xiao Liang, Kohei Ishikawa, Toru Ujihara, Yasuhiko Sakai, Koji Iwano

    PHYSICAL REVIEW RESEARCH   Vol. 1 ( 3 )   2019.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:AMER PHYSICAL SOC  

    In metal-anode batteries such as zinc, the concentration of metal ions in the electrolyte usually plays a significant role in the metal electrodeposition upon charging. This study aims to clarify the concentration of zincate ions near the zinc anode. After preliminary experiments in a minichannel were conducted to identify the system parameters, galvanostatic charging experiments in a zinc battery cell were conducted at current densities of 20 and 40 mA cm(-2). The bulk concentrations of zincate ions were set to 0.49 and 0.98 mol L-1. Images near the zinc anode were captured using an optical microscope to calculate the zincate ion concentration distribution through the background-oriented Schlieren (BOS) technique. They were taken at an equal time intervals to investigate the transition of the concentration diffusion layer. It was confirmed that the BOS technique enables us to quantitatively measure the zincate ion concentration in zinc anode batteries. The results are consistent with the theoretical expectation. The applied current density basically determines the concentration gradient near the anode surface, although it takes time to reach a steady state. The spatial variance in the zincate ion concentration at the anode surface increases with the distance from equilibrium.

    DOI: 10.1103/PhysRevResearch.1.033162

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  24. EFFECT OF THE LARGE-SCALE STRUCTURE ON TURBULENT PRANDTL NUMBER IN A TURBULENT SHEAR LAYER

    Takamure Kotaro, Sakai Yasuhiko, Ito Yasumasa, Iwano Koji

    PROCEEDINGE OF THE ASME/JSME/KSME JOINT FLUIDS ENGINEERING CONFERENCE, 2019, VOL 1     page: .   2019.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    Web of Science

  25. Three-dimensional visualization of destruction events of turbulent momentum transfer in a plane jet Reviewed

    Mamoru Takahashi, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    Physics of Fluids   Vol. 31 ( 10 ) page: 105114   2019.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.5122219

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  26. Numerical investigation of passive scalar transport and mixing in a turbulent unconfined coaxial swirling jet

    Kadu Pravin Ananta, Sakai Yasuhiko, Ito Yasumasa, Iwano Koji, Sugino Masatoshi, Katagiri Takahiro, Nagata Koji

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER   Vol. 142   2019.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ijheatmasstransfer.2019.118461

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  27. Influence of large-scale structure on the turbulent Prandtl number in a turbulent mixing layer Reviewed

    K. Takamure, Y. Sakai, Y. Ito, K. Iwano

    Transactions of the Visualization Society of Japan   Vol. 39 ( 4 ) page: 1 - 10   2019.4

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    <p>We have run a Direct Numerical Simulation of a spatially developing shear mixing layer. The aim of this study is to clarify the influence of the large-scale structure on the turbulent Prandtl number <i>Pr<sub>T</sub></i>. As a main conclusion, <i>Pr<sub>T</sub></i> takes a small value (<i>Pr<sub>T</sub></i> ~ 0.5) in the dominant region of the large-scale structure. The budget analyses for the Reynolds stress equation and the scalar flux equation revealed that the differences between the momentum and scalar transfer are caused by terms related to pressure (i.e., pressure-strain correlation term, pressure-scalar gradient correlation term, and pressure diffusion terms). Phenomenally, the momentum in the field where a large-scale vortex coexists tends to be transported toward the counter-gradient direction under the influence of pressure, but the scalar is transported toward the gradient direction. As a result, it is thought that the difference in the driving force between the momentum and scalar transport causes the decrease of the <i>Pr<sub>T</sub></i>. </p>

    DOI: 10.3154/tvsj.39.1

  28. Experimental investigation on destruction of Reynolds stress in a plane jet Reviewed

    Mamoru Takahashi, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    Experiments in Fluids   Vol. 60 ( 3 )   2019.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Nature  

    DOI: 10.1007/s00348-019-2691-8

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  29. Dissipation scaling in the transition region of turbulent mixing layer Reviewed

    K. Takamure, Y. Sakai, Y. Ito, K. Iwano, T. Hayase

    International Journal of Heat and Fluid Flow   Vol. 75   page: 77 - 85 (9pages)   2019.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.ijheatfluidflow.2018.11.012

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  30. Experimental Study on Grid Turbulence Interacting with a Spherical Shock Wave Reviewed

    Y. Ito, Y. Ato, Y. Sakai, K. Iwano, K. Nagata, Akihiro Sasoh

    31st International Symposium on Shock Waves 1     page: 1161 - 1166   2019

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    Language:English   Publishing type:Part of collection (book)   Publisher:Springer International Publishing  

    DOI: 10.1007/978-3-319-91020-8_140

  31. Entrainment and Diffusion Mechanism in a Round Jet Modified by Vortex Generators Reviewed

    Yasumasa Ito, Kosuke Naganawa Yasuhiko Sakai, Koji Iwano

    Proceedings of 15th International Conference on Flow Dynamics     page: OS14-10   2018.11

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    Language:English  

  32. Numerical Visualization of Reynolds Stress Destruction in a Plane Jet Reviewed

    Mamoru Takahashi, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    Proceedings of 15th International Conference on Flow Dynamics     page: 722-723   2018.11

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  33. Influence of Swirl on Coaxial Jets Reviewed

    P. Kadu , Yasuhiko Sakai, Yasumasa Ito, Koji Iwano, Masatoshi. Sugino, T. Katagiri, Toshiyuki Hayase

    Proceedings of 15th International Conference on Flow Dynamics     page: 776-777   2018.11

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  34. Cross wavelet analysis of Reynolds stress transport in turbulent planar jet Reviewed

    IWANO Koji, TAKAHASHI Mamoru, SAKAI Yasuhiko, ITO Yasumasa

    Transactions of the Visualization Society of Japan   Vol. 38 ( 9 ) page: 26-35   2018.9

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    <p>  Cross wavelet analysis was used to analyze instantaneous Reynolds stress production and destruction in turbulent planar jet at Reynolds number based on jet exit velocity and exit width of 10,000. Instantaneous value of pressure and velocity gradient correlation obtained by a probe which consists of an X-type hot-wire and a miniature static pressure tube was analyzed by cross wavelet. This analysis enabled us to capture the structure of Reynolds stress production and destruction without losing the local time and scale information. The result showed that the production and destruction of Reynolds stress occur around the large scale vortex. </p>

    DOI: 10.3154/tvsj.38.26

  35. The Relationship Between the Large-scale Structures and Bursting Phenomenon in Turbulent Boundary Layer

    CHEN Xiaonan, IWANO Koji, SAKAI Yasuhiko, ITO Yasumasa

    The Proceedings of the Fluids engineering conference   Vol. 2018 ( 0 ) page: OS11-2   2018.9

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    Language:Japanese  

    <p>In this study, the relationship between the Large-scale structures and bursting phenomenon was investigated by the simultaneous measurement of streamwise velocity in the logarithmic region and the buffer region in a turbulent boundary layer using multi-channels hot-wire probes. Superstructures (SSs) were detected in the logarithmic region whereas bursting phenomenon was detected in buffer region. Furthermore, the superstructures were divided into the high speed Superstructure (pSS) and the low speed Superstructure (nSS), respectively, and both of their impacts on the bursting phenomenon were investigated. As a result, it was found that the presence of SSs has an effect on the amplitude of the bursting waveform. In addition, the packet of large scale hairpin vortices straddling the SS was observed, suggesting that the detected bursting phenomenon includes those generated with large scale hairpin vortex. A further investigation shows that different sizes of hairpin vortices could be identified when the bursting phenomenon occurring.</p>

    DOI: 10.1299/jsmefed.2018.OS11-2

  36. Combined probe for simultaneous measurement of velocity, temperature, and pressure Reviewed

    Takahashi M, Iwano K, Sakai Y, Ito Y

    Turbulence, Heat and Mass Transfer 9. Proceedings of the Ninth International Symposium on Turbulence, Heat and Mass Transfer     2018.8

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  37. Laboratory Measurements of Heat Transfer and Drag Coefficients at Extremely High Wind Speeds Reviewed

    Satoru Komori, Koji Iwano, Naohisa Takagaki, Ryo Onishi, Ryoichi Kurose, Keiko Takahashi, Naoya Suzuki

    JOURNAL OF PHYSICAL OCEANOGRAPHY   Vol. 48 ( 4 ) page: 959-974   2018.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1175/JPO-D-17-0243.1

  38. Generation method of wind waves under long-fetch conditions over a broad range of wind speeds Reviewed

    Takagaki Naohisa, Komori Satoru, Iwano Koji, Suzuki Naoya, Kumamaru Hiroshige

    IUTAM SYMPOSIUM ON WIND WAVES   Vol. 26   page: 184-193   2018.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.piutam.2018.03.018

    Web of Science

  39. Enhancement and suppression of mixing and diffusion in an axisymmetric jet by half delta-wing tabs

    Ito Y., Miura K., Sakai Y., Iwano K.

    INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER   Vol. 118   page: 1218-1230   2018.3

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    DOI: 10.1016/j.ijheatmasstransfer.2017.11.053

    Web of Science

  40. Development of an optical imaging technique for particle number density Reviewed

    Naohisa Takagaki, Koji Iwano, Emil Ilyasov, Satoru Komori, Yoshiyuki Shirakawa

    Journal of Fluid Science and Technology   Vol. 13 ( 1 ) page: JFST0001-JFST0001   2018.1

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    DOI: 10.1299/jfst.2018jfst0001

  41. Momentum transport process in the quasi self-similar region of free shear mixing layer

    Takamure K., Ito Y., Sakai Y., Iwano K., Hayase T.

    PHYSICS OF FLUIDS   Vol. 30 ( 1 )   2018.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.5004500

    Web of Science

  42. Joint statistics between velocity-gradient and fluctuating pressure in a turbulent planar jet Reviewed

    Mamoru Takahashi, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    Transactions of the JSME (in Japanese)   Vol. 84 ( 857 ) page: 17-00430   2017.12

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    DOI: 10.1299/transjsme.17-00430

  43. Modification of hemodynamics in basilar artery aneurysm by the single and Y stent placement Reviewed

    Tatsuya Matsuda, Yasumasa Ito, Kohei Masunaga, Yasuhiko Sakai, Keiko Irie, Koji Iwano, Koji Nagata

    Technology and Health Care   Vol. 25   page: 831-842   2017.10

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    DOI: 10.3233/THC-160487

  44. Loop-Type Wave-Generation Method for Generating Wind Waves under Long-Fetch Conditions

    Takagaki Naohisa, Komori Satoru, Ishida Mizuki, Iwano Koji, Kurose Ryoichi, Suzuki Naoya

    JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY   Vol. 34 ( 10 ) page: 2129-2139   2017.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1175/JTECH-D-17-0043.1

    Web of Science

  45. Smooth-surfaced flexible wall shear stress sensor fabricated by film transfer technology Reviewed

    Yoshihiro Hasegawa, Chiaki Okihara, Takayuki Yamada, Kai Komatsubara, Koji Iwano, Yasuhiko Sakai, Mitsuhiro Shikida

    Sensors and Actuators A: Physical   Vol. 265   page: 86-93   2017.8

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    DOI: 10.1016/j.sna.2017.08.016

  46. Simultaneous measurement of velocity-gradient and fluctuating static pressure in a turbulent planar jet Reviewed

    Mamoru Takahashi, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    Transactions of the JSME (in Japanese)   Vol. 83 ( 850 ) page: 17-00004   2017.5

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1299/transjsme.17-00004

  47. Experimental study on the flow structure and sound generation between the blades of multi-blade fan Reviewed

    Koji Iwano, Yusuke Goto, Yuya Fukao, Yasuhiko Sakai, Yasumasa Ito, Koji Nagata, Masaharu Sakai, Toshinori Ochiai, Shuzo Oda

    Transactions of the JSME (in Japanese)   Vol. 83 ( 849 ) page: 16-00541   2017.4

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    DOI: 10.1299/transjsme.16-00541

  48. Effects of grid geometry on non-equilibrium dissipation in grid turbulence Reviewed

    Koji Nagata, Teppei Saiki, Yasuhiko Sakai, Yasumasa Ito, Koji Iwano

    Physics of Fluids   Vol. 29 ( 1 ) page: 015102   2017.1

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    DOI: 10.1063/1.4973416

  49. PIV Measurements of Grid Turbulence Vorticity Interacting with a Spherical Shock wave

    ATO Yudai, ITO Yasumasa, Sakai Yasuhiko, IWANO Koji, NAGATA Koji, SASOH Akihiro

    The Proceedings of Conference of Tokai Branch   Vol. 2017 ( 0 )   2017

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    DOI: 10.1299/jsmetokai.2017.66.415

  50. Effects of stoichiometric mixture fraction on the chemical reaction near the turbulent/non-turbulent interface in the planar liquid jet

    NAKAGAWA Kota, WATANABE Tomoaki, IWANO Koji, SAKAI Yasuhiko, ITO Yasumasa

    The Proceedings of Conference of Tokai Branch   Vol. 2017 ( 0 )   2017

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    DOI: 10.1299/jsmetokai.2017.66.422

  51. Numerical simulation of flow in a cerebral aneurysm with flow diverter stent placement

    ITO Yasumasa, GOYODANI Taichi, MATSUDA Tatsuya, SAKAI Yasuhiko, IWANO Koji

    The Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME   Vol. 2017 ( 0 )   2017

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    DOI: 10.1299/jsmebio.2017.29.2C45

  52. Mechanism of drag coefficient saturation at strong wind speeds Reviewed

    Naohisa Takagaki, Satoru, Komori, Naoya Suzuki, Koj Iwano, Ryoichi Kurose

    Geophysical Research Letter   Vol. 43   page: 9829-9835   2016.9

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    DOI: 10.1002/2016GL070666

  53. Enhancement of Turbulent Diffusion in an Axisymmetric Jet by Vortex Generators Reviewed

    Mamoru Takahashi, Kensuke Miura, Yasuhiko Sakai, Yasumasa Ito, Koji Iwano, Koji Nagata

    Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015)   Vol. 185   page: 77-83   2016.7

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  54. Study on control of axisymmetric jet by half delta-wing shaped vortex generators (Part 2: Evaluation of statistics on the thermal field) Reviewed

    Kensuke Miura, Yasumasa Ito, Yasuhiko Sakai, Koji Iwano, Koji Nagata

    Transactions of the JSME (in Japanese)   Vol. 82 ( 838 ) page: 16-00087   2016.5

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    DOI: 10.1299/transjsme.16-00087

  55. 半デルタ翼形状を有するボルテックスジェネレータによる軸対称噴流の制御に関する研究 Reviewed

    三浦健介, 伊藤靖仁, 酒井康彦, 岩野耕治, 長田孝二

    日本機械学会論文集   Vol. 81 ( 828 ) page: 15-00306   2015.6

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

    DOI: 10.1299/transjsme.15-00306

  56. Mass transfer velocity across the breaking air-water interface at extremely high wind speeds Reviewed

    Koji Iwano, Naohisa Takagaki, Ryoichi Kurose, Satoru Komori

    Tellus B   Vol. 65   page: 21341   2013.9

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3402/tellusb.v65i0.21341

  57. Strong correlation between the drag coefficient and the shape of the wind sea spectrum over a broad range of wind speeds Reviewed

    Naohisa Takagaki, Satoru Komori, Naoya Suzuki, Koji Iwano, Tomonori Kuramoto, Satoshi Shimada, Ryoichi Kurose, Keiko Takahashi

    Geophysical Research Letters   Vol. 39   page: L23604   2012.12

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  58. Sensible and latent heat transfer across the air-water interface in wind-driven turbulence Reviewed

    Satoru Komori, Ryoichi Kurose, Nnaohisa Takagaki, Ssyuhei Ohtsubo, Koji Iwano, Kazuhiro Handa, Satoshi Shimada,

    GAS TRANSFER AT WATER SURFACES 2010     page: 78-89   2011

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  59. Direct numerical simulation of wind-driven turbulence and scalar transfer at sheared gas-liquid interfaces Reviewed

    Satoru Komori, Ryoichi Kurose, Koji Iwano, Takehiro Ukai, Naoya Suzuki

    Journal of Turbulence   Vol. 11   page: 1-20   2010.3

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▼display all

Books 1

  1. 撹拌技術とスケールアップ、シミュレーションの活用

    技術情報協会( Role: Contributor ,  第1章 第3節 「液相乱流混合のメカニズム」)

    技術情報協会  2021.11  ( ISBN:9784861048647

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    Total pages:532p   Language:Japanese Book type:Scholarly book

    CiNii Books

MISC 2

  1. Investigation of Non-equilibrium Turbulence and Its Application to Flow Control (Cases of inhomogeneous, anisotropic and compressible turbulence)

    Y. Sakai, K. Nagata, Y. Ito, K. Iwano, T. Watanabe, T. Hayase, K. Takamure, K. Tanaka, S. Nagaya

    Proc. of the 17th International Symposium on Advanced Fluid Information (AFI-2017)     page: 1 page   2017.11

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    Language:English   Publishing type:Research paper, summary (national, other academic conference)  

  2. Experimental Study on Grid Turbulence Interacting with a Spherical Shock Wave Reviewed

    Y. Ito, Y. Ato, S. Sakai, K. Iwano, K. Nagata, A. Sasoh

    Proc. of the 31st International Symposium on Shock Waves (ISSW31)     page: USB (4 pages)   2017.7

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    The 31st International Symposium on Shock Waves (ISSW31) will be held July 9-14, 2017, at Toyoda Auditorium, Nagoya University, Nagoya, Japan. This will be the third ISSW held in Japan, after 26 years from ISSW-18 in Sendai. The symposium will be organized with strong supports from International Shock Wave Institute (ISWI), Shock Wave Research Society of Japan, School of Engineering of Nagoya University, and some other societies, organizations, governments and industries. ISSW provides excellent forum of shock wave research and its applications to science, engineering, medical and other various fields. As well as scientific programs, participants will enjoy cultural activities including watching Grand Sumo Tournament held during the symposium period.

Presentations 137

  1. A Study on Flow Structure and Noise Generation in a Separated-and-Reattaching Flow in Sirocco Fan

    Kosuke Seto, Koji Iwano, Yasumasa Ito, Yasuhiko Sakai, Masaharu Sakai, Shuzo Oda Fumiya ishii Sho, Kosaka Jun Yamaoka

    The 7th International Conference on Jets, Wakes and Separated Flows 2022  2022.3.15 

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    Event date: 2022.3

    Language:English   Presentation type:Oral presentation (general)  

  2. Effect of Artificial Large-scale Motions on Bursting in Turbulent Boundary Layer

    Xiaonan Chen, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    The 7th International Conference on Jets, Wakes and Separated Flows 2022  2022.3.15 

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    Event date: 2022.3

    Language:English   Presentation type:Oral presentation (general)  

  3. Chemical reaction of high Schmidt number scalars in a turbulent planar wall-jet

    Koji Iwano, Soma Nagaya, Yasuhiko Sakai, Yasumasa Ito

    The 7th International Conference on Jets, Wakes and Separated Flows 2022  2022.3.15 

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    Event date: 2022.3

    Language:English   Presentation type:Oral presentation (general)  

  4. 格子乱流場における高シュミット数物質の混合特性に関する実験的研究

    鈴木 迪博;岩野 耕治;酒井 康彦;伊藤 靖仁

    機械学会東海支部 第71期講演会  2022.3.4 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web開催  

  5. OpenFOAM を用いたシロッコファン翼間における渦構造と流体騒音に関する研究

    瀬戸孝祐;岩野 耕治;伊藤 靖仁;酒井 康彦;酒井 雅晴;石井 文也;山岡 潤

    機械学会東海支部 第71期講演会  2022.3.4 

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    Event date: 2022.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web開催  

  6. Numerical Investigation about Inverse Cascade Phenomenon in Mixing Layer International conference

    Muyang Wang, Yasumasa Ito, Takumi Okawa, Koji Iwano, Yasuhiko Sakai

    Eighteenth International Conference on Flow Dynamics  2021.10.28 

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    Event date: 2021.10

    Language:English   Presentation type:Oral presentation (general)  

  7. Turbulent energy transport in wakes behind bars and grids International coauthorship International conference

    Y. Zhou;Y. Ito;K. Nagata;T. Watanabe;K. Iwano;Y. Sakai;Y. Hattori

    Eighteenth International Conference on Flow Dynamics  2021.10.29 

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    Event date: 2021.10

    Language:English   Presentation type:Oral presentation (general)  

  8. Turbulent energy transport in wakes behind bars and grids International conference

    Y. Zhou, Y. Ito, K. Nagata, T. Watanabe, K. Iwano, Y. Sakai, Y. Hattori

    Eighteenth International Conference on Flow Dynamics  2021.10.29 

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    Event date: 2021.10

    Language:English   Presentation type:Oral presentation (general)  

  9. 格子乱流でのスカラの逆カスケード方向の輸送現 象に関する研究

    汪 沐陽, 百合草 拓哉, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    日本流体力学会 年会2021  2021.9.22 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  10. 乱流境界層におけるvery-large-scale motion の蛇行に関する実験的研究

    陳 暁楠, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    第49回可視化情報シンポジウム  2021.9.10 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  11. 多翼ファン翼間におけるはく離・再付着流れ構造と騒音の発生メカニズムに関する研究

    瀬戸 孝祐、岩野 耕治、酒井 康彦、伊藤 靖仁、酒井 雅晴、小田 修三、石井 文也、小坂 翔、山 岡 潤

    日本機械学会 2021年度 年次大会  2021.9.8 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  12. The relation between dissipation and the scale-by-scale transport in grid-generated turbulence

    汪 沐陽, 伊藤 靖仁, 百合草 拓哉, 酒井 康彦, 岩野 耕治

    日本機械学会 2021年度 年次大会  2021.9.6 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  13. 格子乱流場における高シュミット数物質の微小スケール混合特性に関する実験的研究

    鈴木 迪博, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    日本機械学会 2021年度 年次大会  2021.9.7 

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    Event date: 2021.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  14. DNSによる化学反応を伴う乱流噴流拡散場に及ぼすシュミット数の影響に関する研究

    鬼頭 憲司, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    日本機械学会東海支部 第70期総会・講演会  2021.3.13  日本機械学会東海支部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web開催   Country:Japan  

  15. 大規模人工渦の導入による乱流境界層の壁近傍構造変化に関する研究

    山口 晃平, 岩野 耕治, 陳 暁楠, 酒井 康彦, 伊藤 靖仁

    日本機械学会東海支部 第70期総会・講演会  2021.3.13  日本機械学会東海支部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web開催   Country:Japan  

  16. 正方格子下流で生成される平衡・非平衡乱流場における乱流エネルギおよびスカラのスケール間輸送機構の解明

    百合草 拓哉, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本機械学会東海支部 第70期総会・講演会  2021.3.13  日本機械学会東海支部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web開催   Country:Japan  

  17. 乱流混合層における乱流エネルギおよびスカラのスケール間輸送の遷移に関する研究

    大川 拓己, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本機械学会東海支部 第70期総会・講演会  2021.3.13  日本機械学会東海支部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web開催   Country:Japan  

  18. DNSを用いた化学反応を伴う二次元乱流噴流場におけるシュミット数の影響の調査

    鬼頭 憲司, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    第34回数値流体力学シンポジウム  2020.12.21  日本流体力学会

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    Event date: 2020.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web開催   Country:Japan  

  19. 光ファイバLIF法を用いた高シュミット数乱流混合の研究

    岩野耕治,酒井康彦,伊藤靖仁

    第三回 せん断流の多様な機能の探究と先端科学技術への応用に関する研究分科会(3)  2020.12.4  日本機械学会流体工学部門

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    Event date: 2020.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

  20. 乱流境界層における大規模構造間の剪断層がバースト現象に及ぼす影響

    陳暁楠, 岩野耕治, 酒井康彦, 伊藤靖仁

    日本機械学会第98期流体工学部門講演会  2020.11.11  日本機械学会

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:Web開催   Country:Japan  

  21. Measurement of High Schmidt Number Scalar Mixing in Grid Generated Turbulence

    Koji Iwano, Michihiro Suzuki, Yasuhiko Sakai, Yasumasa Ito

    Eighteenth International Conference on Flow Dynamics  2021.10.28 

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    Event date: 2020.10 - 2021.10

    Language:English   Presentation type:Oral presentation (general)  

  22. プラズマアクチュエータを用いた乱流境界層内における人工大規模構造の生成

    山口晃平, 岩野耕治,陳暁楠, 酒井康彦, 伊藤靖仁

    日本機械学会2020年年次大会  2020.9.14  日本機械学会

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋web開催   Country:Japan  

  23. 球面衝撃波と低マッハ数格子乱流の相互作用に関する研究

    横山雄基, 酒井康彦,伊藤靖仁, 岩野耕治

    日本機械学会東海支部 第69期総会・講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名城大学   Country:Japan  

  24. 流れと翼面からの発生騒音に関する研究

    井上 凌佑, 岩野 耕治,酒井 康彦,伊藤靖仁

    日本機械学会東海支部 第69期総会・講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名城大学   Country:Japan  

  25. 二次元壁面噴流における乱流統計量の初期条件依存性に関する実験的研究

    中野功詞, 岩野耕治, 酒井康彦, 伊藤靖仁

    日本機械学会東海支部 第69期総会・講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名城大学   Country:Japan  

  26. 液相噴流中の高シュミット数スカラー混合におけるレイノルズ数依存性に関する研究

    細井淳平, 岩野耕治, 酒井康彦, 伊藤靖仁

    日本機械学会東海支部 第69期総会・講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名城大学   Country:Japan  

  27. 半デルタ翼形状タブの影響を受けた噴流のスカラ輸送メカニズムの解明

    丹下慶久, 伊藤靖仁, 酒井康彦, 岩野耕治

    日本機械学会東海支部 第69期総会・講演会 

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    Event date: 2020.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名城大学   Country:Japan  

  28. シロッコファンの翼間のはく離/再付着流れ構造と翼面からの発生騒音に関する研究

    井上 凌佑,岩野 耕治,酒井 康彦,伊藤 靖仁, 酒井 雅晴,小田 修三,小坂 翔

    日本機械学会第97期流体工学部門講演会 

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    Event date: 2019.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:アソシア豊橋   Country:Japan  

  29. 液相軸対称噴流における高シュミット数物質混合のレイノルズ数依存性

    細井淳平 岩野耕治, 酒井康彦, 伊藤靖仁

    日本機械学会第97期流体工学部門講演会 

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    Event date: 2019.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:アソシア豊橋   Country:Japan  

  30. 新生児における腸吻合手術後の腸内流動シミュレーション

    伊藤 靖仁, 安里 洸一郎, 趙 寅赫,  酒井 康彦, 岩野 耕治, 田井中 貴久

    日本機械学会2019年年次大会 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:秋田大学   Country:Japan  

  31. 液相乱流噴流中の高シュミット数物質混合

    岩野 耕冶, 細井 淳平 酒井 康彦, 伊藤 靖仁

    日本流体力学会年会2019 

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    Event date: 2019.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:電気通信大学   Country:Japan  

  32. 液相乱流噴流中の高シュミット数物質混合 Invited

    岩野耕治

    化学工学会粒子・流体プロセス部会 ミキシング技術分科会夏期セミナー 

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    Event date: 2019.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:ヨコハマ ジャスト   Country:Japan  

  33. 乱流境界層内大規模構造がバースト現象の分布に及ぼす影響

    陳 暁楠, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    第47回可視化情報シンポジウム 

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    Event date: 2019.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都大学   Country:Japan  

  34. 格子乱流場におけるエネルギおよびスカラのスケ-ル間輸送機構に関する実験的研究

    檜垣 秀一, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本機械学会東海支部 第68期総会・講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学   Country:Japan  

  35. 旋回流を伴う軸対称噴の PIV・PLIF計測と流れ場の構造解析

    杉野 雅俊, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本機械学会東海支部 第68期総会・講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学   Country:Japan  

  36. 化学反応を伴う液相壁面噴流拡散場に関する実験的研究

    長屋 宗馬, 岩野 耕治, 酒井 康彦, 伊藤 靖

    日本機械学会東海支部 第68期総会・講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学   Country:Japan  

  37. Numerical Study on Scalar Transport in Single-Square-Grid-generated Turbulence

    日本機械学会東海支部 第68期総会・講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学   Country:Japan  

  38. 亜鉛負極界面の平衡性がイオン濃度場および結晶形態に及ぼす影響

    梁 瀟, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本機械学会東海支部 第68期総会・講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学   Country:Japan  

  39. フローダイバータ型ステント留置術が脳動脈瘤内の血流特性に及ぼす影響

    趙 寅赫, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本機械学会東海支部 第68期総会・講演会 

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    Event date: 2019.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:岐阜大学   Country:Japan  

  40. 液相噴流中の高シュミット数乱流拡散

    岩野 耕治, 鈴木 航司, 酒井 康彦, 伊藤 靖仁

    第4回 海洋地球科学計算ワークショップ ~成層と物質拡散~ 

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    Event date: 2019.1

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:富国生命ビル(東京)   Country:Japan  

  41. 同軸旋回噴流におけるパッシブスカラー輸送

    第32回数値流体シンポジウム 

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    Event date: 2018.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:機械振興会館(東京都)   Country:Japan  

  42. 乱流境界層内の大規模構造とバースト現象の関係

    陳 暁楠, 岩野 耕治, 酒井 康彦, 伊藤 靖

    ⽇本機械学会 第96期 流体⼯学部⾨ 講演会 

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    Event date: 2018.11

    Language:Japanese   Presentation type:Poster presentation  

    Venue:蓬莱殿(室蘭市)   Country:Japan  

  43. 亜鉛負極近傍における亜鉛イオン濃度場と析出形態の関係

    梁 瀟, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    第59回電池討論会 

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    Event date: 2018.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪国際会議場   Country:Japan  

  44. 格子乱流中の渦スケール間スカラ輸送機構の解明

    檜垣 秀一, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    第16 回日本流体力学会中部支部講演会 

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    Event date: 2018.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:静岡大学浜松キャンパス   Country:Japan  

  45. Fluid Dynamics and Energy/scalar Transport in Coexisting Flows of Turbulence and Non-turbulence International conference

    Yasuhiko Sakai, Yasumasa Ito, Koji Iwano, Toshiyuki Hayase, Z. Yi, Soma Nagaya, J. Yu

    15th International Conference on Flow Dynamics 

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    Event date: 2018.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  46. 新生児における腸吻合手術後の腸内流動シミュレーション

    伊藤 靖仁, 安里 洸一郎, 趙 寅赫, 酒井 康彦, 岩野 耕治, 田井中 貴久

    日本機械学会2019年年次大会 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  47. CFD による脳動脈瘤に対するフローダイバーターステント留置術の評価

    趙 寅赫, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本流体力学会年会2018 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学   Country:Japan  

  48. 半デルタ翼形状タブにより形成された縦渦が噴流拡散 密度変化が大きい低マッハ数流れの効率的な陽解法に及ぼす役割

    伊藤 靖仁,長縄 洸佑, 酒井 康彦, 岩野 耕治

    日本流体力学会年会2018 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学   Country:Japan  

  49. 二次元噴流における組織的渦構造周辺のレイノルズ応力破壊

    高橋 護, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    日本流体力学会年会2018 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学   Country:Japan  

  50. 光ファイバLIF法による液相乱流噴流中の高分解能濃度変動計測

    岩野 耕治, 鈴木 航司, 酒井 康彦, 伊藤 靖仁

    日本流体力学会年会2018 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学   Country:Japan  

  51. 軸対称噴流と旋回噴流が共存する流れ場の構造解明

    杉野 雅俊, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本流体力学会年会2018 

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    Event date: 2018.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:大阪大学   Country:Japan  

  52. 粒子群及び格子の落下により生成される乱流場の特性

    戸田 良佑, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本機械学会東海支部 第67期総会・講演会 

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    Event date: 2018.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:名古屋大学東山キャンパス   Country:Japan  

  53. 多翼ファン翼間のはく離・再付着流れ構造と発生音に関する 研究

    深尾 勇也, 酒井 康彦, 伊藤 靖仁, 岩野 耕治, 酒井 雅晴, 小田 修三, 小坂 翔, 吉岡 将

    日本機械学会東海支部 第67期総会・講演会 

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    Event date: 2018.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:名古屋大学東山キャンパス   Country:Japan  

  54. 半デルタ翼形状タブの影響を受けた噴流の発達

    長縄 洸佑, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本機械学会東海支部 第67期総会・講演会 

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    Event date: 2018.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:名古屋大学東山キャンパス   Country:Japan  

  55. MEMS 技術を用いた速度 2 成分・CO2 濃度計測用超小型熱線 プローブの開発

    中村 悟, 酒井 康彦, 伊藤 靖仁, 岩野 耕治

    日本機械学会東海支部 第67期総会・講演会 

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    Event date: 2018.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:名古屋大学東山キャンパス   Country:Japan  

  56. 高分解能光ファイバ型LIF法濃度計の開発および液相噴流拡 散場の普遍平衡性に関する研究

    鈴木 航司, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    日本機械学会東海支部 第67期総会・講演会 

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    Event date: 2018.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:名古屋大学東山キャンパス   Country:Japan  

  57. 二次元壁面噴流の乱流構造に関する実験的研究

    小松原 海, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    日本機械学会東海支部 第67期総会・講演会 

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    Event date: 2018.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:名古屋大学東山キャンパス   Country:Japan  

  58. ボルテックスジェネレータが噴流の混合・拡散に及ぼす影響解明

    長縄 洸佑, 伊藤 靖仁, 酒井 康彦, 岩野 耕治, 早瀬 敏幸

    第31回数値流体シンポジウム 

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    Event date: 2017.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都工芸繊維大学   Country:Japan  

  59. 半デルタ翼型タブによる軸対称噴流の制御

    伊藤 靖仁, 酒井 康彦, 岩野 耕治

    日本機械学会流体工学部門・第4回せん断流分科会 

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    Event date: 2017.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  60. 落下粒子群により生成される乱流場に関する実験的研究

    戸田 良佑, 伊藤 靖仁, 酒井 康彦, 岩野 耕治

    第15 回日本流体力学会中部支部講演会 

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    Event date: 2017.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋工業大学   Country:Japan  

  61. 光ファイバ LIF 法による液相噴流中の微小スケール濃度計測に関する研究

    鈴木 航司, 岩野 耕治, 酒井 康彦, 伊藤 靖仁

    第15 回日本流体力学会中部支部講演会 

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    Event date: 2017.12

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋工業大学   Country:Japan  

  62. Direct numerical simulation of planer turbulent jet with chemical reaction International conference

    Soma Nagaya, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito, Tomoaki Watanabe, Toshiyuki Hayase

    14th International Conference on Flow Dynamics  

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sendai International Center, Sendai, Japan   Country:Japan  

  63. Transition of Local Homogeneity in a Turbulent Mixing Layer International conference

    Kotaro Takamure, Yasumasa Ito, Yasuhiko Sakai, Koji Iwano, Toshiyuki Hayase

    14th International Conference on Flow Dynamics  

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sendai International Center, Sendai, Japan   Country:Japan  

  64. Effect of Amplitude Modulation on Bursting Phenomena in Turbulent Boundary Layer International conference

    Koji Iwano, Yusuke Sawaguchi, Yasuhiko Sakai, Yasumasa Ito

    14th International Conference on Flow Dynamics  

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Sendai International Center, Sendai, Japan   Country:Japan  

  65. Investigation of Non-equilibrium Turbulence and Its Application to Flow Control (Cases of inhomogeneous, anisotropic and compressible turbulence)

    Y. Sakai, K. Nagata, Y. Ito, K. Iwano, T. Watanabe, T. Hayase, K. Takamure, K. Tanaka, S. Nagaya

    Proc. of the 17th International Symposium on Advanced Fluid Information (AFI-2017)  2017.11 

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    Event date: 2017.11

    Language:English   Presentation type:Oral presentation (general)  

  66. Effect of different initial conditions on a turbulent planer wall jet International conference

    Koji Iwano, Kai Komatsubara, Yasuhiko Sakai, Yasumasa Ito

    Ninth JSME-KSME Thermal and Fluids Engineering Conference 

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    Event date: 2017.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Okinawa Convention Center, Okinawa, Japan   Country:Japan  

  67. Mass Transport Mechanism in a Spatially Developing Free Shear Mixing Layer, International conference

    Kotaro Takamure, Yasumasa Ito, Yasuhiko Sakai, Koji Iwano, Toshiyuki Hayase

    Ninth JSME-KSME Thermal and Fluids Engineering Conference 

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    Event date: 2017.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Okinawa Convention Center, Okinawa, Japan   Country:Japan  

  68. Numerical study on the effect of different initial concentrations on a turbulent planer jet with chemical reaction International conference

    Soma Nagaya, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    Ninth JSME-KSME Thermal and Fluids Engineering Conference 

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    Event date: 2017.10

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Okinawa Convention Center, Okinawa, Japan   Country:Japan  

  69. Effect of initial velocity profile on the development of planer wall jet

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  70. 直接数値シミュレーションによる化学反応を伴う二次元乱流噴流に関する研究

    長屋 宗馬, 岩野 耕治, 酒井 康彦, 伊藤 靖 仁

    日本機械学会2017 年度年次大会 

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    Event date: 2017.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:埼玉大学   Country:Japan  

  71. Separated-reattachment flow structure and the noise generation between the blades of a sirocco fan International conference

    Yuya Fukao, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito, Masaharu Sakai, Syuzo Oda, Toshinori Ochiai

    4th Symposium on Fluid-Structure-Sound Interactions and Control 

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    Event date: 2017.8

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Nihon University, Tokyo, Japan   Country:Japan  

  72. Effect of large scale structures on bursting phenomena in turbulent boundary layer International conference

    Koji Iwano, Yusuke Sawaguchi, Yasuhiko Sakai, Yasumasa Ito

    International Workshop: New Challenges in Wall Turbulence 

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    Event date: 2017.6

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Centrale Lille, Villeneuve d'Ascq, France   Country:France  

  73. ステント留置下での脳動脈瘤内流れ Invited

    伊藤 靖仁, 酒井 康彦, 岩野 耕治

    兵庫県立大学先端医工学研究センター・第4回医工連携セミナー 

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    Event date: 2017.5

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:兵庫県立大学   Country:Japan  

  74. に及ぼす量論混合比の影響

    中川公太, 渡邉智昭, 岩野耕治, 酒井康彦, 伊藤靖仁

    日本機械学会東海支部第 66期総会・講演会 

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    Event date: 2017.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:静岡大学浜松キャンパス   Country:Japan  

  75. 平板乱流境界層内部のSuperstructureとバースト現象との関連性

    澤口湧典, 岩野耕治, 酒井康彦, 伊藤靖仁

    日本機械学会東海支部第 66期総会・講演会 

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    Event date: 2017.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:静岡大学浜松キャンパス   Country:Japan  

  76. 旋回流を伴う軸対象噴流の流れ場とスカラー場の周波数構造解析

    前川祐太, 伊藤靖仁, 酒井康彦, 岩野耕治, 長田孝二, 丹野賢二

    日本機械学会東海支部第 66期総会・講演会 

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    Event date: 2017.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:静岡大学浜松キャンパス   Country:Japan  

  77. PIVによる球面衝撃波と干渉した格子乱流の渦渡場計測

    阿戸雄大, 伊藤靖仁, 酒井康彦, 岩野耕治, 長田孝二, 佐宗彰弘

    日本機械学会東海支部第 66期総会・講演会 

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    Event date: 2017.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:静岡大学浜松キャンパス   Country:Japan  

  78. フローダイバータ型ステント留置下での脳動脈瘤内流れの数値シミュレーション

    伊藤靖仁, 五葉谷太一, 松田龍哉, 酒井康彦, 岩野耕治

    日本機械学会 第 29 回バイオエンジニアリング講演会 

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    Event date: 2017.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:ウィンクあいち(名古屋市)   Country:Japan  

  79. 二次元噴流における圧力および歪速度の同時計測

    高橋護, 岩野耕治, 酒井康彦, 伊藤靖仁

    日本機械学会 第94期 流体工学部門 講演会 

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    Event date: 2016.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:山口大学工学部   Country:Japan  

  80. Investigation of Non-equilibrium Turbulence and Its Application to Flow Control (Cases of Mixing Layer, Grid Turbulence and Jet)

    Y. Sakai, K. Nagata, Y. Ito, K. Iwano, T. Watanabe, T. Hayase, K. Takamure, M. Li

    Proc. of the 16th International Symposium on Advanced Fluid Information (AFI-2016)  2016.10 

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    Event date: 2016.10

    Language:English   Presentation type:Oral presentation (general)  

  81. シロッコファンの翼間におけるはく離/再付着流れ構造と発生騒音に関する研究

    深尾勇也, 岩野耕治, 酒井康彦, 伊藤靖仁, 酒井雅晴, 小田修三, 落合利徳

    日本流体力学会年会2016 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋工業大学   Country:Japan  

  82. 乱流遷移域のせん断混合層における運動量・物質輸送現象の数値的解明

    高牟禮光太郎, 伊藤靖仁, 酒井康彦, 岩野耕治

    日本流体力学会年会2016 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋工業大学   Country:Japan  

  83. 乱流境界層内部の大規模構造がバースト現象に与える影響の評価

    澤口湧典,岩野耕治, 酒井康彦, 伊藤靖仁

    日本流体力学会年会2016 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋工業大学   Country:Japan  

  84. 二次元液相噴流における乱・非界面近傍での化学反応場関す研究 International conference

    中川公太,渡邊智昭,酒井康彦,岩野耕治,伊藤靖仁,長田孝二

    日本流体力学会年会2016 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋工業大学   Country:Japan  

  85. 熱式マイクロセンサを用いた壁面乱流噴流場における壁面せん断応力変動の計測

    小松原海,岩野 耕治, 酒井 康彦, 伊藤 靖仁

    日本機械学会2016 年度年次大会 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学 伊都キャンパス   Country:Japan  

  86. 二次元噴流における圧力-歪相関・圧力-温度勾配相関の計測

    高橋護,岩野耕治,中村悟,酒井康彦,伊藤 靖仁

    日本機械学会2016 年度年次大会 

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    Event date: 2016.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学 伊都キャンパス   Country:Japan  

  87. 軸対称噴流と旋回噴流が共存する流れ場の動的構造解析

    前川祐太, 伊藤靖仁, 酒井康彦, 岩野耕治, 長田孝二, 丹野賢二

    第44回 可視化情報シンポジウム  

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    Event date: 2016.7 - 2016.8

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:工学院大学   Country:Japan  

  88. 二次元噴流における乱流熱輸送機構に関する実験的研究

    高橋護, 岩野耕治, 酒井康彦, 伊藤靖仁

    日本機械学会東海支部 第65期総会・講演会 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛知工業大学 八草キャンパス   Country:Japan  

  89. 内頚動脈瘤に対するステントメッシュ形状の最適設計

    松田龍哉, 酒井 康彦,伊藤 靖仁, 岩野 耕治, 入江恵子, 長田孝二

    日本機械学会東海支部 第65期総会・講演会 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛知工業大学 八草キャンパス   Country:Japan  

  90. フラクタル,正方,マルチスケール格子による乱流場の空間発展と減衰特性に関する研究

    祭貴哲平, 長田孝二, 酒井 康彦,伊藤 靖仁, 岩野 耕治,

    日本機械学会東海支部 第65期総会・講演会 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛知工業大学 八草キャンパス   Country:Japan  

  91. MEMSを用いた熱式壁面せん断応力センサの開発および壁乱流構造に関する研究

    村松 空, 岩野 耕治, 酒井 康彦,伊藤 靖仁, 式田 光宏

    日本機械学会東海支部 第65期総会・講演会 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛知工業大学 八草キャンパス   Country:Japan  

  92. 数値解析による翼間はく離/再付着流れと騒音発生要因に関する研究

    馬渡修太, 後藤優典, 岩野耕治, 酒井康彦, 伊藤靖仁, 酒井雅晴, 小田修三, 落合利徳, 長田孝二

    日本機械学会東海支部 第65期総会・講演会 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  93. 翼間のはく離/再付着流れ構造 と発生騒音に関する実験的研究

    後藤優典, 馬渡修太, 岩野耕治, 酒井康彦, 伊藤靖仁, 酒井雅晴, 小田修三, 落合利徳, 長田孝二

    日本機械学会東海支部 第65期総会・講演会 

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    Event date: 2016.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:愛知工業大学 八草キャンパス   Country:Japan  

  94. Measurement of wall shear stress with a micro hot film sensor

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    Event date: 2015.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  95. Investigation of Non-equilibrium Turbulence and Its Application to Flow Control International conference

    Yasuhiko Sakai, Koji Nagata, Yasumasa Ito, Koji Iwano,Toshiyuki Hayase, Tomoaki Watanabe, Yi Zhou

    the 15th International Symposium on Advanced Fluid Information  

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    Event date: 2015.10

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  96. Measurement of the Wall Shear Stress by the Micro Hot-film Sensor in Wall Jet International conference

    Koji Iwano, Sora Muramatsu, Yasuhiko Sakai, Yasumasa Ito, Koji Nagata

    the 12th International Conference on Flow Dynamics 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  97. Simultaneous measurement of pressure and temperature gradient in a planer jet International conference

    Mamoru Takahashi, Koji Iwano, Yasuhiko Sakai, Yasumasa Ito

    International Conference on Advanced Technology in Experimental Mechanics 2015 

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    Event date: 2015.10

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  98. Effects of half delta-wing tabs on scalar mixing and diffusion in an axisymmetric jet International conference

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  99. Numerical investigation of separated-reattachment flow between Fan blades and the factor of Aeroacoustic noise generation

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  100. Study on the Noise of Separated/Reattachment Flow between the Blades

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  101. カルマン渦と球面衝撃波の干渉に関するPIV計測

    小西敬三, 阿戸雄大, 長田孝二, 酒井康彦, 佐宗章弘, 伊藤靖仁, 岩野耕治

    第43回可視化情報シンポジウム 

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    Event date: 2015.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:工学院大学(新宿キャンパス)   Country:Japan  

  102. PIVを用いた格子乱流と球面衝撃波の干渉に関する研究

    阿戸雄大,小西敬三,長田孝二,酒井康彦,佐宗章弘,伊藤靖仁,岩野耕治

    第47回流体力学講演会/第33回航空宇宙数値シミュレーション技術シンポジウム 

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    Event date: 2015.7

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学駒場リサーチキャンパス   Country:Japan  

  103. ENHANCEMENT OF TURBULENT DIFFUSION IN AN AXISYMMETRIC JET BY VORTEX GENERATORS International conference

    Mamoru Takahashi, Kensuke Miura, Yasuhiko Sakai, Kouji Nagata, Yasumasa Ito, Koji Iwano

    International Conference on Jets, Wakes and Separated Flows  

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    Event date: 2015.6

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  104. 軸対称噴流と旋回噴流の共存場に関する実験研究

    粟田浩平,伊藤靖仁,李銘淏,酒井康彦,長田孝二,岩野耕治,丹野賢二,前川祐太

    第52回日本伝熱シンポジウム 

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    Event date: 2015.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:福岡国際会議場   Country:Japan  

  105. 亜鉛負極近傍における亜鉛イオン濃度場の評価と電析機構の解明

    萩ノ崎賢也, 伊藤靖仁, 宇治原徹, 酒井康彦, 長田孝二, 岩野耕治

    日本機械学会東海支部 第64期総会・講演会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:中部大学   Country:Japan  

  106. Numerical Study on Coaxial Round Jets with Swirl

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  107. 化学反応を伴う高Sc数乱流噴流拡散場に関する研究

    内藤尭啓, 渡辺智昭, 酒井康彦, 長田孝二, 岩野耕治

    日本機械学会東海支部 第64期総会・講演会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:中部大学   Country:Japan  

  108. PIV計測による球形/非球形粒子を含む固液二相流に関する研究

    王詩文, 伊藤靖仁, 酒井康彦, 長田孝二, 岩野耕治

    日本機械学会東海支部 第64期総会・講演会 

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    Event date: 2015.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:中部大学   Country:Japan  

  109. PIVを用いた球面衝撃波とカルマン渦/格子乱流の干渉に関する研究

    小西敬三, 長田孝二, 酒井康彦, 佐宗章弘, 伊藤靖仁, 岩野耕治

    日本機械学会東海支部 第64期総会・講演会 

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    Event date: 2015.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:中火大学   Country:Japan  

  110. IV-PLIF計測による格子乱流中のスカラ混合・拡散に関する研究

    渡邉知幸, 伊藤靖仁, 長田孝二, 酒井康彦, 岩野耕治

    日本機械学会東海支部 第64期総会・講演会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:中部大学   Country:Japan  

  111. 衝撃波と一様乱流場/Townsend渦の干渉に関する直接数値計算

    竹内康介, 長田孝二, 酒井康彦, 酒井武治, 佐宗章弘, 伊藤靖仁, 岩野耕治

    日本機械学会東海支部 第64期総会・講演会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:中部大学   Country:Japan  

  112. 主流乱れの影響を受けた乱流境界層の乱流/非乱流界面近傍 における統計的特性

    滝崎貴雄, 酒井康彦, 長田孝二, 伊藤靖仁, 岩野耕治

    日本機械学会東海支部 第64期総会・講演会 

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:中部大学   Country:Japan  

  113. 148 Numerical Study on Coaxial Round Jets with Swirl

    LI Minghao, ITO Yasumasa, NAGATA Kouji, SAKAI Yasuhiko, TANNO Kenji, IWANO Koji

    2015.3.13  The Japan Society of Mechanical Engineers

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    Event date: 2015.3

    Language:English   Presentation type:Oral presentation (general)  

  114. 190 Study of concentration of zincate ion and electrodeposition system near the zinc anode

    HAGINOSAKI Kenya, ITO Yasumasa, UJIHARA Toru, SAKAI Yasuhiko, NAGATA Koji, IWANO Koji

    2015.3.13  The Japan Society of Mechanical Engineers

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  115. 162 Statistical Characteristics near the Turbulent/Non-turbulent Interface of the Turbulent Boundary Layer Influenced by Freestream Turbulence

    2015.3.13  The Japan Society of Mechanical Engineers

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  116. 161 Direct numerical simulation of interaction between shock wave and homogeneous turbulence/Townsend's eddy

    TAKEUCHI Kosuke, NAGATA Kouji, SAKAI Yasuhiko, SAKAI Takeharu, SASOH Akihiro, Ito Yasumasa, IWANO Kouji

    2015.3.13  The Japan Society of Mechanical Engineers

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  117. 158 Study on scalar diffusion and mixing in grid turbulence by PIV-PLIF measurement

    WATANABE Tomoyuki, ITO Yasumasa, NAGATA Kouji, SAKAI Yasuhiko, IWANO Koji

    2015.3.13  The Japan Society of Mechanical Engineers

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  118. 157 The Investigation of Spherical Shock Wave and Karman Vortex/Grid Turbulence Interaction Using PIV

    KONISHI Keizo, NAGATA Kouji, SAKAI Yasuhiko, SASOH Akihiro, ITO Yasumasa, IWANO Koji

    2015.3.13  The Japan Society of Mechanical Engineers

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  119. 156 A study on solid-liquid two-phase flows, with spherical / non-spherical particle dispersion by PIV

    WANG Shiwen, ITO Yasumasa, SAKAI Yasuhiko, NAGATA Kouji, IWANO Koji

    2015.3.13  The Japan Society of Mechanical Engineers

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  120. 149 Study on turbulent jet diffusion with a chemical reaction at a high Schmidt number

    NAITO Takahiro, WATANABE Tomoaki, SAKAI Yasuhiko, NAGATA Kouji, ITO Yasumasa, IWANO Koji

    2015.3.13  The Japan Society of Mechanical Engineers

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    Event date: 2015.3

    Language:Japanese   Presentation type:Oral presentation (general)  

  121. 衝撃波干渉下におけるTownsend 渦および一様等方性乱流に関する数値計算

    竹内康介, 長田孝二, 酒井康彦, 酒井武治, 佐宗章弘, 伊藤靖仁, 岩野耕治

    第12 回 日本流体力学会中部支部講演会 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:三重大学   Country:Japan  

  122. PIV 法を用いた衝撃波と渦の干渉に関する可視化計測

    小西敬三, 竹内康介, 北村拓也, 長田孝二, 酒井康彦, 佐宗章弘, 伊藤靖仁

    第92期日本機械学会流体工学部門講演会 

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    Event date: 2014.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:富山大学   Country:Japan  

  123. 広い風速範囲におけるマスバランス法による物質輸送係数の測定

    岩野耕治,高垣直尚,神内浩行,西平守志,黒瀬良一,小森 悟

    日本海洋学会2014 年度春季大 

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    Event date: 2014.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:東京海洋大学   Country:Japan  

  124. 強風速下における風波気液界面を通しての物質輸送量の評価

    岩野耕治,高垣直尚,神内浩行,西平守志,黒瀬良一,小森 悟

    日本流体力学会 2013年度年会 

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    Event date: 2013.9

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  125. 強風速下における風波の波形勾配の評価 International conference

    高垣 直尚,倉本 武典,神内 浩行,岩野 耕治,黒瀬 良一,小森 悟

    第90期 日本機械学会 流体工学部門 講演会 

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    Event date: 2012.12

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  126. G714 Estimate of wave length at extremely high wind speeds

    TAKAGAKI Naohisa, KURAMOTO Takenori, KAMIUCHI Hiroyuki, IWANO Koji, KUROSE Ryoichi, KOMORI Satoru

    Fluids engineering conference ...  2012.11.16  The Japan Society of Mechanical Engineers

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    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Wave slope was evaluated by measuring both significant wave height and length in a broad wind speed range. Experiments were conducted in a high-speed wind wave tank. The results show that the significant wave length increases steeply with free-stream wind-speed at low wind speeds ( U_∞ <15 m/s), increases gradually at middle wind speeds (15 ≦ U_∞ < 27 m/s), and increases steeply again at extremely high wind speeds (U_∞>= 27 m/s). The wave slope increases with the free-stream wind-speed in the low wind speed region ( U_∞ <15 m/s), but it reaches a constant value in the high wind speed region (U_∞ ≧ 15 m/s). These results suggest that the trend of wave development in the high wind speed region is different from that in the low wind speed region owing to wave breaking.

  127. Mass transfer across the air-water interface with wave breaking International conference

    The 12th Kyoto - Tsinghua - Seoul National University Thermal Engineering Conference 

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    Event date: 2012.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  128. 風波乱流場における気液間CO2移動に関する降雨パラメータの検討 International conference

    高垣直尚,坂本遼平,藤井一穂,岩野耕治,黒瀬良一,小森 悟

    日本流体力学会 年会2012 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:高知大学   Country:Japan  

  129. 砕波を伴う高風速下における水位変動の測定 International conference

    高垣直尚,島田暁,倉本武典,岩野耕治,神内浩行,黒瀬良一,小森悟

    日本流体力学会 年会2012 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:高知大学   Country:Japan  

  130. 高速風洞水槽を用いた風波界面上の抗力測定 International conference

    高垣直尚,岩野耕治,島田 暁,倉本武典,黒瀬良一,小森 悟

    2012年度日本海洋学会春季大会 

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    Event date: 2012.3

    Language:English   Presentation type:Oral presentation (general)  

    Venue:筑波大学   Country:Japan  

  131. Effects of fetch and entrained bubbles on mass transfer across the air-water interface with wave breaking International conference

    Koji Iwano, Naohisa Takagaki, Ryoichi Kurose, Satoru Komori

    The 8th KSME-JSME Thermal and fluids engineering conference 

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    Event date: 2012.3

    Language:English   Presentation type:Oral presentation (general)  

    Country:Korea, Republic of  

  132. J056022 Estimation of Mass Transfer across the Air-Water Interface in the High Speed Wind Region with Breaking Waves

    IWANO Koji, TAKAGAKI Naohisa, ILYASOV Emil, KUROSE Ryoichi, KOMORI Satoru

    Mechanical Engineering Congress, Japan  2011.9.11  The Japan Society of Mechanical Engineers

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    To predict the future global warming, one of the important issues is to precisely estimate mass transfer rate of greenhouse gases (e.g. CO_2 gas) across the air-water interface between atmosphere and oceans which cover about 70% of the surface of the earth. In this study, the effect of fetch on mass transfer across the air-water interface with wave breaking in high speed wind region is investigated through laboratory experiments in a wind-wave tank. The CO_2 transfer coefficient in the liquid side, kL, is measured by applying the mass-balance method to CO_2 evasion experiments. In the mass-balance method, vertical and horizontal distributions of wind velocity and CO_2 concentration in air are taken into account. The results show that kL increases rapidly in high speed wind region where the wind wave breaks and dispersed droplets and entrained bubbles are generated, and that it is not affected by the fetch in any wind speed region.

  133. 高風速下における砕波気液界面を通しての運動量輸送

    倉本武典,島田暁 ,岩野耕治,高垣直尚,黒瀬良一,小森悟

    日本流体力学会 2011年度年会 

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    Event date: 2011.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  134. 砕波を伴う高風速域における潜熱輸送量の評価

    島田暁,高垣直尚,岩野耕治,黒瀬良一,小森悟

    日本機械学会 2010年度年次大会 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  135. The effect of counter-swell on mass transfer across the air-water interface International conference

    Koji Iwano, Naohisa Takagaki, Ryoichi Kurose, Satoru Komori

    The 6th International Symposium on Gas Transfer at Water Surfaces 

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    Event date: 2010.4

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  136. The effects of rain on wind-wave turbulent flow International conference

    Naohisa Takagaki, Koji Iwano, Satoru Komori

    The 12th Euromech European Turbulence Conference 

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    Event date: 2009.9

    Language:English   Presentation type:Poster presentation  

    Country:Germany  

  137. OpenFOAM を用いたシロッコファン翼間における渦構造と流体騒音に関する研究

    瀬戸孝祐, 岩野 耕治, 伊藤 靖仁, 酒井 康彦, 酒井 雅晴, 石井 文也, 山岡 潤

    日本機械学会 東海支部 第71期講演会  2022.3.8 

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    Language:English   Presentation type:Oral presentation (general)  

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KAKENHI (Grants-in-Aid for Scientific Research) 13

  1. 高シュミット数物質の乱流混合における微小スケール普遍性の実験的検証

    Grant number:21K03851  2021.4 - 2024.3

    日本学術振興会  科学研究費助成事業 基盤研究(C)  基盤研究(C)

    岩野 耕治, 酒井 康彦, 伊藤 靖仁

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    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    分子拡散が起こりづらい(=高シュミット数)物質が乱流中で混合されるとき,微小スケールに普遍的な濃度揺らぎの構造(粘性対流小領域)が存在することが理論的に予想されている.長年,この予想の検証が試みられてきたが,計測装置の空間分解能不足や,スパコンの計算性能不足のため,未だに普遍性の実証には至っていない.本研究では,極めて高い空間分解能を持つ濃度計測装置を用いて,様々な乱流混合場で高シュミット数物質の濃度変動を計測することで,粘性対流小領域の存在,及びその普遍性を検証する.

  2. 乱流噴流場における高シュミット数物質の拡散・混合過程の解明

    2021.4 - 2022.3

    名古屋大学HPC計算科学連携研究プロジェクト 

    岩野 耕治

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    Authorship:Principal investigator 

  3. 表面プラズモン共鳴現象に基づく光ファイバ型超高分解能多成分濃度計の開発

    2019.8 - 2021.7

    公益財団法人 立松財団 

  4. Experimental study on the mechanism of large-scale structure in wall turbulence

    Grant number:18K13683  2018.4 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists  Grant-in-Aid for Early-Career Scientists

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    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

  5. Development of pressure-velocity gradient measurement probe and clarification of the turbulent mechanism of jet

    Grant number:15K17969  2015.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    Iwano Koji

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    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    In this study, we developed new probes that can simultaneously measure pressure and velocity gradient in order to directly investigate the process of Reynolds stress disappearance in turbulent flow, that is, the isotropization process of turbulence. The values of the pressure-velocity gradient correlation obtained from the Reynolds stress balance and that obtained from the direct measurement by the developed probes agree well inside the velocity half-width of the planer jet, and the measurement accuracy of the developed probes was confirmed. In addition, by using wavelet analysis, it became clear that there is interaction between scales in the isotropization process of turbulence.

  6. 縦渦による噴流輸送制御に向けた基礎構造の解明

    Grant number:20K04264  2020.4 - 2023.3

    日本学術振興会  科学研究費助成事業 基盤研究(C)  基盤研究(C)

    伊藤 靖仁, 酒井 康彦, 岩野 耕治, 酒井 康彦, 岩野 耕治

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    Authorship:Coinvestigator(s) 

    Grant amount:\400000 ( Direct Cost: \400000 )

    本研究では,ヴォルテクスジェネレータの設置や旋回の利用を提案した噴流制御法の開発を目的とする.いずれの場合にも鍵となる要素の一つは縦渦であるが,初期条件・境界条件により流れの形態が簡単に遷移するため,それらの流動構造や制御法の有効性は限られた条件下でしか解明されていない.そこでPODやDMDにより流動構造を低次元化・要素化し,機械学習を利用することにより,上記の噴流現象の理解および付加エネルギを必要としないパッシブな噴流制御法の最適化指針の確立を目指す.室内実験および数値シミュレーションを併用することで,信頼性を確保したうえで様々な条件下の流れを効率よく再現する.
    本研究目的は軸対象噴流を中心とする噴流の拡散混合制御と関連する自由乱流中での乱流の減衰機構の解明である.初年度である令和2年度は,より高レイノルズ数乱流の数値シミュレーションを可能にするためのOpenFOAMを用いたLarge-eddy simulation(LES)による計算コードの構築とDNSによる自由乱流場での減衰挙動の解明を中心に行った.
    <BR>
    旋回噴流場に関する計算においては,これまで直接数値計算(DNS)で行ってきたレイノルズ数Re=2200の流れに加えて,Re=22000の流れ場に対する計算を行った.Re=2200の流れ場に対しては,DNSとLESを比較すると定性的にはおおむね一致した結果が得られたが,逆流領域の出現がLESの方がやや弱い(領域が狭い,逆流速度が小さい)結果となった.この原因は不明であるが,一般的なDynamic SGSモデルより,壁面近傍の乱流場を良く再現するとされるWaleモデルの方がより良い結果を示した.またRe=22000の流れ場における旋回の有無の影響は,Re=2200の場合とほぼ変わらないが,レイノルズ数が高くなると旋回の影響が強くなり,半径方向,噴流中心方向に拡散が広がる,またそれにより,各速度変動強度が中心軸上で大きくなり,また,半径方向に分布が広がることが明らかにされた.さらにSpectral proper orthogonal decomposition (SPOD)の結果から,Re=2200においては周方向に動きを伴う構造が見られるが,Re=22000においては,r/D>1の領域(rは半径方向長さ,Dは噴流直径)で周方向に動きを伴う構造と半径方向に拡散する構造が見られ,r/D<1では半径方向に拡散する構造がはっきりと見られた.したがって,噴流出口付近において,レイノルズ数が高いほど拡散混合していると考えられる.
    上記のように,旋回を伴う噴流場については,テストしたレイノルズ数条件下では,おおむね同様の流れ場を示した.一方ヴォルテクスジェネレータによる噴流制御については,ヴォルテクスジェネレータ近傍の計算メッシュの構築に想定より時間がかかったが,こちらも計算コードを構築できた.また乱流減衰に関する研究においても興味深い結果が得られた.したがって,研究はおおむね予定通り進行しているといえる.
    引き続き噴流制御と乱流減衰に関する研究を中心に遂行する.特にコロナ禍において,換気を伴いながらエアコンを効率よく稼働させたい場合などを考えると,周囲流体をできるだけ巻き込まずスポット的に噴流を噴射する,すなわち噴流の制御でも特にその抑制が求められる.したがって令和3年度は,それを一つの目的として研究を行う.特にヴォルテクスジェネレータによる噴流制御は工学的応用が容易であるため,実用化に近いと期待される.またエアコンの吹き出し口は通常円形ではなく矩形であるため,ヴォルテクスジェネレータの矩形噴流に対する影響なども調査していく予定である.

  7. 風洞実験による壁乱流中の大規模構造の発生・維持機構の解明と新規抵抗低減手法の探索

    2018.4 - 2021.3

    科学研究費補助金 

    岩野耕治

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    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

  8. Elucidation and modeling for the high Peclet number turbulent diffusion and reactive phenomena near the turbulent/non-turbulent inteface

    Grant number:18H01369  2018.4 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s) 

    Grant amount:\300000 ( Direct Cost: \300000 )

  9. 乱流・非乱流共存流動場における流動構造とエ ネルギ・スカラ輸送機構

    2018.4 - 2021.3

    東北大学 流体科学研究所  一般公募共同研究 

  10. 非平衡乱流現象の解明と制御

    2015.4 - 2018.3

    東北大学 流体科学研究所  一般公募共同研究 

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    Authorship:Other 

  11. 圧力・速度勾配同時測定プローブの開発および噴流の乱流構造の解明

    2015.4 - 2017.3

    科学研究費補助金  若手研究(B)

    岩野耕治

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    Authorship:Principal investigator 

  12. Generation of quasi homogeneous isotropic turbulence with no mean flow using Megahertz ultrasonic tranceducers

    Grant number:15K13867  2015.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research  Grant-in-Aid for Challenging Exploratory Research

    Nagata Koji, IWANO Koji, ITO Yasumasa, SAKAI Yasuhiko

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    A grid tank in which turbulence is generated by a grid and steady flow (i.e., acoustic streaming) when Megahertz (0.95 MHz) ultrasound is irradiated into a quiescent water is newly designed and manufactured. The characteristics of created turbulent flows are measured by using particle image velocimetry (PIV). The mesh length of the grid is M=20 mm and the thickness of the square bar is 4 mm, so that its solidity is 36%. In order to further elucidate the characteristics of the turbulent field, a numerical code for direct numerical simulation of temporally developing grid turbulence is newly developed based on the finite difference method. The calculations are conducted on a supercomputer for the mesh Reynolds numbers of 10,000 and 20,000. The characteristics of the turbulent flow are investigated by above-mentioned experiments and calculations.

  13. Development of microscale multicomponent concentration measurement device by a laser light absorption spectrometric method and clarification of non-equilibrium chemical reaction process

    Grant number:15K13868  2015.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research  Grant-in-Aid for Challenging Exploratory Research

    Sakai Yasuhiko, NAGATA Kouji, ITOU Yasumasa, IWANO Koji

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    In this study, a new type of optical fiber probe was developed to measure small scale fluctuation of multiple diffusive matters simultaneously in turbulent liquid flows. The size of measurement volume of the probe is 100 μm or less, which is the highest spatial resolution as an absorption type concentration measurement device in the world. Concentration fluctuations of the high Schmidt number diffusing dyes were measured in a liquid axisymmetric jet with the new probe. As a result, in the smaller range than the Kolmogorov micro-scale (i.e., in the viscous-convective subrange), we could observe the trending that the power exponent of the concentration fluctuation spectrum with respect to the wave number approaches -1.

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Teaching Experience (On-campus) 14

  1. Automobile Engineering Laboratory II

    2020

  2. 機械・航空宇宙工学実験第1

    2020

  3. 統計流体工学セミナー2B

    2020

  4. 統計流体工学セミナー2A

    2020

  5. 統計流体工学セミナー1D

    2020

  6. 統計流体工学セミナー1C

    2020

  7. 統計流体工学特別実験及び演習B

    2020

  8. 統計流体工学特別実験及び演習A

    2020

  9. 統計流体工学セミナー1B

    2020

  10. 統計流体工学セミナー1A

    2020

  11. 統計流体工学セミナー2C

    2020

  12. 機械・航空宇宙工学実験第2

    2020

  13. 統計流体工学セミナー2E

    2020

  14. 統計流体工学セミナー2D

    2020

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Teaching Experience (Off-campus) 10

  1. Automobile Engineering Laboratory II

    Nagoya University)

  2. 機械システム研修

    Nagoya University)

  3. 機械・航空宇宙工学実験第2

    Nagoya University)

  4. 機械・航空宇宙工学実験第1

    Nagoya University)

  5. 機械・航空工学科実験第1

    Nagoya University)

  6. 機械・航空工学科実験第2

    Nagoya University)

  7. 流体力学基礎1及び演習

    Nagoya University)

  8. 流体力学基礎及び演習

    Nagoya University)

  9. 統計流体工学セミナー

    名古屋大学大学院)

  10. 粘性流体力学及び演習

    Nagoya University)

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Academic Activities 12

  1. 日本機械学会2020年度年次大会 実行委員

    Role(s):Planning, management, etc.

    2019.4 - 2020.9

  2. TOKAI ENGINEERING COMPLEX 2018 (TEC18) 東海支部 第67期総会 ・講演会 実行委員

    Role(s):Planning, management, etc.

    2017.12 - 2018.3

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    Type:Academic society, research group, etc. 

  3. 日本機械学会論文集 査読

    Role(s):Peer review

    2022.1

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    Type:Peer review 

  4. 日本機械学会論文集 査読

    Role(s):Peer review

    2021.9

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    Type:Peer review 

  5. 日本機械学会論文集査読

    Role(s):Peer review

    日本機械学会  2020.8

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    Type:Scientific advice/Review 

  6. 日本機械学会論文集 査読

    Role(s):Peer review

    2020.8

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    Type:Scientific advice/Review 

  7. Journal of Geophysical Research - Oceans査読 International contribution

    Role(s):Peer review

    American Geophysical Union  2020.6

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    Type:Scientific advice/Review 

  8. Journal of Geophysical Research - Oceans 査読

    Role(s):Peer review

    2020.6

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    Type:Scientific advice/Review 

  9. Water, Air, & Soil Pollution 査読

    Role(s):Peer review

    2019.4

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    Type:Scientific advice/Review 

  10. TOKAI ENGINEERING COMPLEX 2019 (TEC19) 東海支部 第68期総会・講演会 座長

    Role(s):Panel moderator, session chair, etc.

    2019.3

  11. The 4th Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC) 座長

    Role(s):Panel moderator, session chair, etc., Peer review

    2017.8

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    Type:Academic society, research group, etc. 

  12. International Journal of Multiphase Flow 査読

    Role(s):Peer review

    2015.2

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    Type:Scientific advice/Review 

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