こばやし ひろみち

Hiromichi KOBAYASHI

Ph.D.
  • Research Field :
    Physics
  • Specific Research Topic :
    Fluid Mechanics, Large-eddy Simulation (LES), Turbulence Modeling, Magnetohydrodynamics (MHD), Plasma Physics

Research Description

Subgrid-scale modeling in LES for complex geometry, Study on turbulent phenomena of MHD flows, MHD power generation using plasma and liquid metal, Coupled dynamics of two fluid model in superfluid 4He, Chiral turbulence with symmetry breaking

Material

(lightbox)

Vortex structure in homogeneous isotropic turbulence.

(lightbox)

Vortex structure in turbulent channel flow

(lightbox)

Vortex structure near fuel injection in gas turbine

(lightbox)

Turbulent structure in liquid metal turbulent duct flow locally applying magnetic field

Selected Journal Publications

  1. Kobayashi, H., Hasebe, T., Fujino, T., Takana, H. (2025) Turbulent Taylor-Couette flow with magnethydrodynamic interaction in axial magnetic field. Physics of Fluids37, 027165 doi

  2. Nabae, Y., Inagaki, K., Kobayashi, H., Gotoda, H., Fukagata, K. (2025) Large-eddy simulation of high-Reynolds-number turbulent channel flow controlled using streamwise traveling wave-like wall deformation for drag reduction. Journal of Fluid Mechanics1003, A2 doi

  3. Kobayashi, H., Yui, S., Tsubota, M. (2024) Influence of different mutual friction models on two-way coupled quantized vortices and normal fluid in superfluid 4He. Physical Review Fluids9, 104605 doi

  4. Inagaki, K., Kobayashi, H. (2023) Analysis of anisotropic subgrid-scale stress for coarse large-eddy simulation. Physical Review Fluids8, 104603 doi

  5. Nitta, K., Sakai, T., Muneoka, H., Shimizu, Y., Kobayashi, H., Terashima, K., Ito, T. (2024) Highly Reproducible Synthesis of Hollow Zirconia Particles via Atmospheric-Pressure Plasma Processing with Inkjet Droplets. Plasma Chemistry and Plasma Processing44:289–303 doi

  6. Hasebe, T., Sasaki, R., Fujino, T., Takana, H., Kobayashi, H.(2023) Experimental and theoretical analyses on power generation characteristics of co-axial MHD energy conversion device. Electrical Engineering in Japan216, e23446 doi

  7. Nitta, K., Muneoka, H., Shimizu, Y., Kobayashi, H.,, Terashima, T., Ito, T. (2023) Evaporation behavior of liquid microdroplets in atmospheric-pressure non-equilibrium plasma. Plasma Sources Science and Technology32, 055008 doi

  8. Tang, Y., Guo, W., Kobayashi, H., Yui, S., Tsubota, T., Kanai, T. (2023) Imaging quantized vortex rings in superfluid helium to evaluate quantum dissipation. Nature Communications14, 2941 doi

  9. Yui, S., Tang, Y., Guo, W., Kobayashi, H., Tsubota, M. (2022) Universal Anomalous Diffusion of Quantized Vortices in Ultraquantum Turbulence. Physical Review Letters129: 025301 (Editors' Suggestion) doi

  10. Inagaki, K., Kobayashi, H. (2022) Transport and modeling of subgrid-scale turbulent kinetic energy in channel flows. AIP Advances12: 045222 doi

  11. Hasegawa, H., Aoki, T., Kobayashi, H., Idomura, Y., Onodera, N. (2021) Tree Cutting Approach for Domain Partitioning on Forest-of-Octrees-based Block-structured Static Adaptive Mesh Refinement with Lattice Boltzmann Method. Parallel ComputingVol.108, 102851 doi

  12. Sasaki, R., Fujino, T., Takana, H., Kobayashi, H. (2021) Theoretical analysis of annular laminar flows with MHD interaction driven by rotating co-axial cylinder. Electron Comm JpnVol.104, No.2, pp.1-9 doi

  13. Inagaki, K., Kobayashi, H.(2020) Role of various scale-similarity models in stabilized mixed subgrid-scale model. Physics of Fluids 31: 075108 doi

  14. Yui, S., Kobayashi, H., Tsubota, M., Guo. W. (2020) Fully Coupled Two-Fluid Dynamics in Superfluid 4He: Anomalous Anisotropic Velocity Fluctuations in Counterflow. Physical Review Letters124: 155301 doi

  15. Klein, M, Ketterl, S., Engelmann, L., Kempf, A., Kobayashi, H.(2020) Regularised, parameter free scale similarity type models for Large Eddy Simulation. International Journal of Heat and Fluid Flow81: 108496 doi

  16. Kobayashi, H., Yui, S., Tsubota, M. (2019) Numerical Study on Entrance Length in Thermal Counterflow of Superfluid 4He. Journal of Low Temperature Physics196: 35-41 doi

  17. Kobayashi, H.(2018) Improvement of SGS model using scale-similarity model based on analysis of SGS force and SGS energy transfer. International Journal of Heat and Fluid Flow72: 329-336 doi

  18. Yui, S., Tsubota, M., Kobayashi, H.(2018) Three-Dimensional Coupled Dynamics of the Two-Fluid Model in Superfluid 4He: Deformed Velocity Profile of Normal Fluid in Thermal Counterflow. Physical Review Letters120: 155301 doi

  19. Kobayashi, H., Okuno, Y. (2016) Turbulent and Electrical Phenomena in a Liquid Metal MHD Energy Conversion Device under Various Load Conditions IEEJ Transactions on Power and Energy136: 773-778 doi

  20. Sugimoto N., Ishioka K., Kobayashi H., and Shimomura Y.(2015) Cyclone-anticyclone asymmetry in gravity wave radiation from a co-rotating vortex pair in rotating shallow water. Journal of Fluid Mechanics772: 80-106. doi

  21. Yoshizawa, A., Kobayashi, H., Sugimoto, N.,Yokoi, N., Shimomura, Y.(2013) A Reynolds-averaged turbulence modeling approach to the maintenance of the Venus superrotation. Geophysical & Astrophysical Fluid Dynamics107, 6: 614-639 doi

  22. Kobayashi, H., Shionoya, H., Okuno, Y. (2012) Turbulent duct flows in a liquid metal magnetohydrodynamic power generator. Journal of Fluid Mechanics713: 243-270 doi

  23. Kobayashi, H., Matsumoto, E., Fukushima, N., Tanahashi, M., Miyauchi, Ueda M. (2011) Statistical properties of the local structure of homogeneous isotropic turbulence and turbulent channel flows. Journal of Turbulence12 (11) : 1-16 doi

  24. Onodera, N., Aoki, T., Kobayashi, H.(2011) Large-Eddy Simulation of Turbulent Channel Flows with Conservative IDO Scheme. Journal of Computational Physics230 (14) : 5785-5805 doi

  25. Kobayashi H. (2008) Large eddy simulation of magnetohydrodynamic turbulent duct flows. Phys Fluids20: 015102 doi

  26. Kobayashi H., Ham F., Wu, X. (2008) Application of a local SGS model based on coherent structures to complex geometries. Int J Heat Fluid Flow29: 640- 653 doi

  27. Kobayashi, H.(2006) Large eddy simulation of magnetohydrodynamic turbulent channel flows with local subgrid-scale model based on coherent structures Phys. Fluids18: 045107 doi

  28. Kobayashi H.(2005) The subgrid-scale models based on coherent structures for rotating homogeneous turbulence and turbulent channel flow. Phys Fluids17: 045104 doi

  29. Kobayashi H., Shimomura Y.(2001) The Performance of Dynamic Subgrid-Scale Models in the Large Eddy Simulation of Rotating Homogeneous Turbulence. Phys Fluids 13: 2350-2360 doi

  30. Kobayashi H., Okuno Y., Kabashima S. (1998) Three-Dimensional Structures of MHD Flow in a Disk Generator. IEEE Trans Plasma Science26: 1526-1531 doi

People

Members

Physics

Aerospace Engineering

Electronics and Electrical Engineering

System Design and Management

Systems Engineering

Chemistry

Materials Science

Biology

Life Science

Bioethics

Physiology

Pedagogy

Mathematics

Psychology

Medicine

English Literature

Economics

Philosophy

Area Studies

Physical Anthropology

French Language and Literature

History of science

Physical Geography(Geomorphology)

Fellow Researchers

Physics

Science pedagogy

Astronomy

Chemistry

Biology

Science Education

Mathematics

Page Top