Logo: Institute of Slush Hydrogen.
When 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, PhD. (Dr. Slush)
- Emeritus Professor, Tohoku University.
- Guest Professor, Japan Aerospace Exploration Agency (JAXA) (Apr. 2016-Mar. 2018).
- Fellow, Cryogenics and Superconductivity Society of Japan.
- PhD (Kyushu Univ.), PhD thesis “Study of hydrogen liquefaction and slush hydrogen production”.
- Dr. Ohira received his bachelor’s degree (1973) and his master’s degree (1975) in aeronautical engineering, and his PhD Engineering (2000) from Kyushu University.
- 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).
- He was a professor at institute of Fluid Science, Tohoku University (2004-2016).
- He 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) (Apr. 2016-Mar. 2018).
- His awards include the Academic Award (1973, Japan Aeronautic Association), the Best Technology Award (2008, The Japanese Society for Multiphase Flow), the Best Research Paper Award (2011, Cryogenics and Superconductivity Society of Japan: CSSJ), the Best Research Achievement Award (2015, CSSJ), etc. He is a Fellow, 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.