Kyushu University Academic Staff Educational and Research Activities Database
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Sugihara Yuji Last modified date:2017.04.07



Graduate School
Undergraduate School


E-Mail
Homepage
http://www.esst.kyushu-u.ac.jp
Link to the Homepage of the Department of Earth System Science and Technology .
Phone
092-583-7551
Fax
092-592-8447
Academic Degree
Doctor of Engineering
Field of Specialization
Environmental Fluid Dynamics, Coastal Engineering, Coastal Hydraulics, Hydraulic Engineering
Outline Activities
(Research subjects)
Gas transfer of carbon dioxide at the air-sea interface
Wave-enhanced turbulence under breaking wind waves
Flux measurements of momentum, heat and carbon dioxide on the ocean surface
Developing measurement system of dissolved carbon dioxide in the ocean
Turbulent scalar transfer at the air-water interface in open channel flow
Turbulence closure modeling and its applications
Heat and mass transfers in urban atmospheric environments
Localized rainfall in urban atmospheric environments
(Educational activities)
Teaching and supervising at the Department of Earth System Science and Technology, Interdisciplinary Graduate School of Engineering Sciences
Teaching and supervising at the Department of Energy Science and Engineering, Faculty of Engineering
Research
Research Interests
  • Study of CO2 transfer mechanism at the air-sea interface
    keyword : gas transfer, windsea, whitecap, carbon dioxide, breaking wave, turbulence
    1998.04Gas transfer of carbon dioxide across the air-sea interface.
  • Effects of breaking wave and turbulence on the ocean boundary processes
    keyword : ocean boundary process, windsea, whitecap, breaking wave, turbulence
    1998.04Wave-enhanced turbulence under breaking wind waves.
  • Field measurements of momentum, heat and CO2 fluxes at the air-sea interface
    keyword : momentum, heat, carbon dioxide, gas transfer, field measurement
    2008.04Gas transfer of carbon dioxide across the air-sea interface.
  • Development of a measurement system for dissolved CO2 concentration in the ocean
    keyword : carbon dioxide, gas transfer, windsea, whitecap, breaking wave
    2008.04Gas transfer of carbon dioxide across the air-sea interface.
  • Turbulence closure modeling and its applications
    keyword : turbulence, closure model, RANS, stratification
    1990.04Turbulence closure modeling and its applications.
  • Turbulence-Based Description of Gas Transfer at the Water Surface and Its Application to Hydraulic Engineering
    keyword : turbulence, open channel, gas transfer, water surface
    2009.01Turbulence closure modeling and its applications.
  • Heat and mass transfers in urban atmospheric environments
    keyword : turbulence, closure model, urban atmoshere
    1996.04Heat and mass transfers in urban atmospheric environments.
  • Localized rainfall in urban atmospheric environments
    keyword : rainfall, turbulence, closure model, urban atmoshere
    2010.04Heat and mass transfers in urban atmospheric environments.
Academic Activities
Papers
1. Ahmed M.E. Khalil, Osama Eljamal, Tareq W.M. Amen, Yuji Sugihara, Nobuhiro Matsunaga, Optimized nano-scale zero-valent iron supported on treated activated carbon for enhanced nitrate and phosphate removal from water, Chemical Engineering Journal, 309, 2017.02.
2. Nobuaki Kimura, Yuji Sugihara, Sho Imagama, Nobuhiro Matsunaga, Akira TAI, Akihiro Hashimoto, Toshimitsu Komatsu, Effective dam use for flood control during a heavy rainfall event, Proceedings of the 12th International Conference of the International Institute for Infrastructure Resilience and Reconstruction, 2016.08.
3. Ryosuke Teraoka, Yuji Sugihara, Takuya Nakagawa, Nobuhiro Matsunaga, Direct numerical simulations of secondary flow and air-water gas transfer in open-channel turbulence, Journal of Japan Society of Civil Engineers, Ser.A2(Applied Mechanics), 71, 2, 2015.12.
4. Yukiko Hisada, Yuji Sugihara, Nobuhiro Matsunaga, Meteorological characteristics of local heavy rainfall in the Fukuoka plain, Journal of Disaster Research, 10, 3, 2015.06.
5. Yuji Sugihara, Sho Imagama, Nobuhiro Matsunaga, Yukiko Hisada, Numerical Experiments on Spatially Averaged Precipitation in Heavy Rainfall Event Using the WRF Model, Journal of Disaster Research, 10, 3, 2015.06.
6. Ami Zaizen, Hongyuan Li, Nobuhiro Matsunaga, Yuji Sugihara, Characteristics of Hypoxic Water Mass in Isahaya Bay, Journal of Japan Society of Civil Engineers, Ser.B1(Hydraulic Engineering), 70, 4, 2014.02.
7. K. Shiono, M. Takeda, K. Yang, Y. Sugihara, T. Ishigaki, Modeling of vegetated rivers for inbank and overbank flows, River Flow 2012, Vol.1, Vol.1, R. E. Murillo (ed.), Taylor & Francis, London, pp.263-270, 2012.09.
8. Y.Sugihara, H. Tsumori, T. Ohga, H. Yoshioka and S. Serizawa, Variation of whitecap coverage with wave-field conditions, Journal of Marine Systems, Vol.66, pp.47-60, 2007.06.
9. H. Tsumori and Y.Sugihara, Lengthscales of motions that control air-water gas transfer in grid-stirred turbulence, Journal of Marine Systems, Vol.66, pp.6-18, 2007.06.
10. H. Tsumori, Y.Sugihara and A. Masuda, Parameterization for CO2 transfer velocity at the surface of wind waves, Journal of Hydroscience and Hydraulic Engineering, Vol.23, No.1, pp.43-55, 2005.05.
11. Yuji Sugihara, Hiromichi Tsumori, Hiroshi Yoshioka, Shigeatsu Serizawa, Imaging measurement of whitecaps at sea observation tower, Coastal Engineering 2004, Vol.1, R. E. Murillo (ed.), Taylor & Francis, London, pp.263-270, 2005.04.
12. Y. Sugihara, M. Migita and H. Honji, Orderly flow structures in grid-generated turbulence with background rotation, Fluid Dynamics Research, 36, 1, Vol. 36, NO.1, pp.23-34, 2005.01.
13. Yuji Sugihara, Hiromichi Tsumori, Surface-renewal eddies at the air-water interface in oscillating-grid turbulence, Environmental Hydraulics and Sustainable Water Management, Vol.1, J. H. W. Lee & K. M. Lam (eds), A. A. Balkema, London, pp.199-205, 2004.12.
14. Hiromichi Tsumori, Yuji Sugihara, Akira Masuda, Estimation of the transfer velocity of carbon dioxide at the surface of wind waves, Environmental Hydraulics and Sustainable Water Management, Vol.1, J. H. W. Lee & K. M. Lam (eds), A. A. Balkema, London, pp.193-198, 2004.12.
15. Y. Sugihara, A. Takasaki, N. Matsunaga, The structure of turbulent boundary layer beneath wind waves, Proc. 3rd Int. Symp. on Environmental Hydraulics, 2001.12.
16. N. Matsunaga, Y. Sugihara, T. Komatsu and A. Masuda, Quantitative properties of oscillating-grid turbulence in a homogeneous fluid, Fluid Dynamics Research, 25, 3, Vol.25, No.3, pp.147-165, 1999.09.
17. Yuji Sugihara, Nobuhiro Matsunaga, Numerical investigation of zero-mean flow turbulence near a free surface, Environmental Hydraulics, J. H. W. Lee, A. W. Jayawardena & Z. Y. Wang (eds), A. A. Balkema, Rotterdam, pp.375-380, 1998.12.
18. H. Honji, N. Matsunaga, Y. Sugihara and K. Sakai, Experimental observation of internal symmetric solitary waves in a two-layer fluid, Fluid Dynamics Research, Vol.15, No.2, pp.89-102, 1995.02.
19. No.503 /Ⅱ-29, pp.215-218.
Membership in Academic Society
  • International Association for Hydro-Environment Engineering and Research
  • Japan Society of Civil Engineers
  • Japan Society of Fluid Mechanics
  • Natural Disaster Research Council
  • Japan Society of Applied Meteorology and Climate Resources
Educational
Other Educational Activities
  • 2016.03.
  • 2016.03.
  • 2013.03.
  • 2013.03.
  • 2013.03.
  • 2013.03.