Profile of Representative



Logo: Institute of Slush Hydrogen
 When the pipe flow velocity of slush hydrogen or slush nitrogen increases and heterogeneous flow changes to pseudo-homogeneous flow, a group of particles being moved to the central region of the pipe suppresses the development of turbulence at the pipe wall, thus resulting in pressure drop reduction and heat transfer deterioration.
 Logo shows an image of the solid fraction profile in slush flow for circular pipe.

Katsuhide OHIRA, Ph.D. (Dr. Slush)

  • Emeritus Professor, Tohoku University
  • Guest Professor, Japan Aerospace Exploration Agency (JAXA) (Apr. 2016-Mar. 2018)
  • Fellow, Cryogenics and Superconductivity Society of Japan
  • Ph.D. from Kyushu Univ. and Ph.D. thesis “Study of hydrogen liquefaction and slush hydrogen production”
  • Address:

Academic careers

  • Dr. Ohira received his B.S. and M.S. degrees in aeronautical engineering from Kyushu University in 1973 and 1975 respectively, and his Ph.D. degree in Engineering from Kyushu University in 2000.
  • He engaged in research and development work on liquid and slush hydrogen technologies, H-Ⅰ, H-Ⅱ, and H-ⅡA rockets, cryogenic liquefier and refrigerator, etc. for Mitsubishi Heavy Industries, Ltd. (MHI) (1975-2004).
    e is currently an emeritus professor of Tohoku University, and Representative of Institute of Slush Hydrogen. He was a guest professor of Japan Aerospace Exploration Agency (JAXA) from Apr. 2016 to Mar. 2018.
  • He was the professor at Institute of Fluid Science, Tohoku University (2004-2016).
  • His awards include the Academic Award of Japan Aeronautic Association in 1973, the Best Technology Award of The Japanese Society for Multiphase Flow in 2008, the Best Research Paper Award of Cryogenics and Superconductivity Society of Japan: CSSJ) in 2011, the Best Research Achievement Award of CSSJ in 2015, etc. He is a Fellow of CSSJ.
  • He has published 51 refereed papers, and 55 technical papers, and given 22 invited lectures, and over 100 presentations at international and domestic conferences in the areas of cryogenics, fluid dynamics, and heat transfer engineering. He has also obtained 51 patents.