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Yasuhisa SHINMOTO Last modified date:2018.05.14

Assistant Professor / Aerospace Structures and Structural Dynamics
Department of Aeronautics and Astronautics
Faculty of Engineering


Graduate School
Undergraduate School


E-Mail
Homepage
http://www.aero.kyushu-u.ac.jp/assl/
Aerospace Structural Systems engineering Laboratory (ASSL) .
Academic Degree
Doctor of Engineering
Field of Specialization
Material Mechanics, Microgravity Science, Heat Transfer
Outline Activities
Outline of research:
Increase in Critical Heat Flux for Flow Boiling in Narrow Channels

Education:
Foundamental Experiment for students

Scial Activities:
Collaboration Research
Research
Research Interests
  • Boiling Heat Transfer of Binary Mixture
    keyword : Binary mixture, Boiling
    2004.04.
  • High Performance Heat Exchanger using of Boiling and Two-phase Flow
    keyword : Boiling, Two-phase Flow, Critical Heat Flux, Narrow Channel
    2002.04-.
Current and Past Project
  • Boiling and two-phase flow are useful means for high-performance heat exchange and heat transportation. Systematic experiments on pressure drops and heat transfer are performed by using long-term period in ISS to establish reliable database which is required for the design of the thermal management systems of high-power and high- heat flux density in the new generation of space development.
    The experiments are performed in MPSR. The knowledge and database obtained are also utilized to the design of cooling systems in commercial-off-the-shelf products such as hybrid automobiles to promote the energy conservation and global environmental protection.
  • -
Academic Activities
Papers
1. Yasuhisa SHINMOTO, Daijiro YAMAMOTO, Daisuke FUJII, Haruhiko OHTA, Heat Transfer Characteristics during Boiling of Immiscible Liquids Flowing in Narrow Rectangular Heated Channels, Frontiers in Mechanical Engineering (Thermal and Mass Transport), 10.3389/fmech.2017.00016, 3, 16, 2017.11, [URL], The use of immiscible liquids for cooling of surfaces with high heat generation density is proposed based on the experimental verification of its superior cooling characteristics in fundamental systems of pool boiling and flow boiling in a tube. For the purpose of practical applications, however, heat transfer characteristics due to flow boiling in narrow rectangular channels with different small gap sizes need to be investigated. The immiscible liquids employed here are FC72 and water, and the gap size is varied as 2, 1, and 0.5 mm between parallel rectangular plates of 30 mm x 175 mm, where one plate is heated. To evaluate the effect of gap size, the heat transfer characteristics are compared at the same inlet velocity. The generation of large flattened bubbles in a narrow gap results in two opposite trends of the heat transfer enhancement due to thin liquid film evaporation and of the deterioration due to the extension of dry patch in the liquid film. The situation is the same as that observed for pure liquids. The latter negative effect is emphasized for extremely small gap sizes if the flow rate ratio of more-volatile liquid to the total is not reduced. The addition of small flow rate of less-volatile liquid can increase the critical heat flux (CHF) of pure more-volatile liquid, while the surface temperature increases at the same time and assume the values between those for more-volatile and less-volatile liquids. By the selection of small flow rate ratio of more-volatile liquid, the surface temperature of pure less-volatile liquid can be decreased without reducing high CHF inherent in the less-volatile liquid employed. The trend of heat transfer characteristics for flow boiling of immiscible mixtures in narrow channels is more sensitive to the composition compared to the flow boiling in a round tube..
2. Yuta FUKUYAMA, Akito KAWAKUBO, Yasuhisa SHINMOTO, Haruhiko OHTA, Masahide SATO, Ken-ichi IIMURA, Masato FUKAGAYA, Yoshiyuki ABE, Development of Cooling System for Data Servers using Flow Boiling of Nanofluid, The 24th International Symposium on Transport Phenomena (ISTP-24), 2013.11, Along the advances in electronic technology, the heat generation density from data servers is increasing rapidly. Existing cooling systems for data servers, which consist of built-in cooling fan arrays and air conditioners installed in the server room, however, cannot meet cooling requirements in the near future. Furthermore, these systems require huge power as much as 40-50% of that consumed in the data center for the operation of air conditioners. A new cooling system proposed here applies flow boiling for the direct transport of the waste heat from the server racks to the air outside of the building. Nucleate boiling removes a large amount of waste heat by a small temperature difference, and the temperature of two-phase flow is kept almost constant during its transportation provided that the pressure drop is negligible. Therefore, the method will become a powerful means to promote the energy conservation. This study reports the cooling performance for the boiling of nanofluid in a devised cooling jacket attached to the heaters with the same size and the same power generation as those of typical semiconductors..
3. Yasuhisa Shinmoto, Yuka Asada, Hiroyuki Kobayashi, Shohei Kanazawa, Haruhiko Ohta, Masato Fukagaya, Yoshiyuki Abe, Mayumi Ouchi, Masahide Sato and Ken-ichi Iimura, Development of High Heat Flux Cooling Jacket for Electronics Devices by using Flow Boiling, Proceedings of the International Conference on Electronics Packaging (ICEP-2011), Japan Institute of Electronics Packaging, Yasuhisa Shinmoto, Yuka Asada, Hiroyuki Kobayashi, Shohei Kanazawa, Haruhiko Ohta, Masato Fukagaya, Yoshiyuki Abe, Mayumi Ouchi, Masahide Sato and Ken-ichi Iimura, "Development of High Heat Flux Cooling Jacket for Electronics Devices by using Flow Boiling", Proceedings of The International Conference on Electronics Packaging (ICEP-2011), Japan Institute of Electronics Packaging, DVD-ROM 6 pages (pp.148-153), 2011.4., 2011.04.
4. Yasuhisa SHINMOTO, Shinichi MIURA, Koich Suzuki, Yoshiyuki Abe, Haruhiko OHTA, Development of Advanced High Heat Flux Cooling System for Power Electronics, ASME 2009 InterPACK Conference(IPACK2009), 10.1115/InterPACK2009-89082, 283-292, Proceedings of InterPACK’09, IPACK2009-89082, DVD-ROM 10 pages, 2009.
ASME 2009 InterPACK Conference, IPACK2009, July 19-23, 2009, San Francisco, California, USA, 2009.07.
5. Shinichi MIURA, Kenta HARA, Yasuhisa SHINMOTO and Haruhiko OHTA,
"High Efficiency Cooling for Flow Boiling in Narrow Channels by Improved Liquid Supply",
Progress in Multiphase Flow Research, Vol. 4, pp.53-60, Apr., 2009., [URL].
6. Cooling of Large Area for Flow Boiling in Narrow Channels by Improved Liquid Supply,
Shinichi MIURA, Yukihiro INADA, Yasuhisa SHINMOTO and Haruhiko OHTA,
Progress in Multiphase Flow Research,
The Japanese Society for Multiphase Flow, Vol.3, pp. 75-82, Apr., 2008..
7. Yasuhisa SHINMOTO, Kanako ARIKI, Shinichi MIURA, Yukihiro INADA and Haruhiko OHTA, Increase in Critical Heat Flux for Flow Boiling in Devised Narrow Channels with Enhanced Liquid Supply, Proceedings of Sixth International Conference on Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology , ECI CHE2007-0059, CD-ROM 8 pages
pp. 425-432, September, 2007., 2007.09.
8. Yasuhisa SHINMOTO, Yosuke ISHIKAWA, Kanako ARIKI and Haruhiko OHTA,
"Critical Heat Flux in Cold Plates of Narrow Channels with Structures for Additional Liquid Supply",
Progress in Multiphase Flow Research, The Japanese Society for Multiphase Flow,
Vol.2, pp.117-124, 2007..
9. Yasuhisa SHINMOTO, Toshiyuki MIZUKOSHI, Takeyuki YOSHIDA, Haruhiko OHTA,
"Experiments on Flow Boiling in Mini-channels for the Development of Space Cold Plates",
Proceedings of the 8th Organized Multiphase Flow Forum 2004-Kumamoto - Multiphase Flow on Mini- and Micro-Scale - (OMF2004-Kumamoto), pp.57-62 (6 pages), 14 Oct., 2004. Kumamoto, Japan..
10. Yasuhisa SHINMOTO, Toshiyuki OHNO, Takeyuki YOSHIDA, Haruhiko OHTA, A Method to Increase CHF for Forced Convective Boiling in Narrow Gaps Applied to Heat Sinks for Semiconductors with High Heat Generation Rate, The 1st International Symposium on Micro & Nano Technology (ISMNT-1), 2004.03.
Presentations
1. Yuta FUKUYAMA, Akito KAWAKUBO, Yasuhisa SHINMOTO, Haruhiko OHTA, Masahide SATO, Ken-ichi IIMURA, Masato FUKAGAYA, Yoshiyuki ABE, Development of Cooling System for Data Servers using Flow Boiling of Nanofluid, The 24th International Symposium on Transport Phenomena (ISTP-24), 2013.11.
2. Yasuhisa SHINMOTO, Soumei BABA, Chisato KUBOTA, Nobuo OHTANI, Takahiro HAYASHIDA, Tomoki HIROKAWA, Haruhiko OHTA, Osamu KAWANAMI, Hitoshi ASANO, Koichi SUZUKI, Ryoji IMAI, Haruo KAWASAKI and Kiyosumi FUJII,
"Test Loop and Ground Experiments to be prepared for Boiling and Two-phase Flow Experiments onboard "KIBO"",
Abstract of the Japan Society of Microgravity Application Conference (JASMAC-25), 29B04, CD-ROM p.J53, Yokohama, 29 Nov., 2011..
3. Hiroyuki KOBAYASHI, Yuka ASADA, Shouhei KANAZAWA, Yasuhisa SHINMOTO, Haruhiko OHTA, Masato FUKAGAYA, Yoshiyuki ABE, Mayumi OUCHI, Masahide SATO, Ken-ichi IIMURA, Development of High Efficient Heat Transport System for Electronics Devices by Using Flow Boiling, Sixth International Conference on Two-phase Systems for Ground and Space Applications, 2011.09.
4. Yasuhisa SHINMOTO, Yuka ASADA, Hiroyuki KOBAYASHI, Shohei KANAZAWA, Haruhiko OHTA, Masato FUKAGAYA, Yoshiyuki ABE, Mayumi OUCHI, Masahide SATO, Ken-ichi IIMURA, Development of High Heat Flux Cooling Jacket for Electronics Devices by using Flow Boiling, International Conference on Electronics Packaging (ICEP-2011), 2011.04.
5. Yasuhisa Shinmoto, Shinichi Miura, Koich Suzuki, Yoshiyuki Abe, Haruhiko Ohta, Development of Advanced High Heat Flux Cooling System for Power Electronics, ASME 2009 InterPACK Conference (InterPACK'09) (ASME/Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems, MEMS and NEMS), 2009.07.
6. Yasuhisa SHINMOTO, Kanako ARIKI, Shinichi MIURA, Yukihiro INADA, Haruhiko OHTA, Increase in Critical Heat Flux for Flow Boiling in Devised Narrow Channels with Enhanced Liquid Supply, Sixth International Conference on Enhanced, Compact and Ultra-Compact Heat Exchangers: Science, Engineering and Technology, Engineering Conferences International (ECI), 2007.09.
7. Yasuhisa SHINMOTO, Yosuke ISHIKAWA,Kanako ARIKI and Haruhiko OHTA,
"Critical Heat Flux in Cold Plates of Narrow Channels with Structures for Additional Liquid Supply",
JSMF Annual Meeting 2006, OS-8, C323, pp.404-405, 6 Aug., 2006..
8. Yasuhisa SHINMOTO, Toshiyuki MIZUKOSHI, Yosuke ISHIKAWA and Haruhiko OHTA,
"Increase in Critical Heat Flux for Flow Boiling in Narrow Channels for the Development of Large-scale Cold Plates for Space",
20th The Japan Society of Microgravity Application Conference (JASMAC-20), A209, p.38, 5 Nov., 2004. Fukui, Japan..
9. Yasuhisa SHINMOTO, Toshiyuki MIZUKOSHI, Takeyuki YOSHIDA, Haruhiko OHTA,
"Experiments on Flow Boiling in Mini-channels for the Development of Space Cold Plates",
Proceedings of the 8th Organized Multiphase Flow Forum 2004-Kumamoto - Multiphase Flow on Mini- and Micro-Scale - (OMF2004-Kumamoto), pp.57-62 (6 pages), 14 Oct., 2004..
10. Yasuhisa SHINMOTO, Toshiyuki OHNO, Haruhiko OHTA, Osamu OGAWA, Hiroya SHIDA, High Heat Flux Cooling by Forced Convective Boiling in Narrow Channels, 3rd International Symposium on Two-Phase Flow Modelling and Experimentation (ISTP 2004), 2004.09.
11. Yasuhisa SHINMOTO, Makoto FUKUYAMA and Haruhiko OHTA,
"Increase in Critical Heat Flux for a Large Heating Surface in a Narrow Channel",
The Japanese Society for Multiphase Flow, Anuual Meeting 2004, pp.79-80, 5 Aug., 2004.
Okayama Univ., Okayama, Japan..
12. Yasuhisa SHINMOTO, Toshiyuki Ohno, Takeyuki Yoshida, Haruhiko OHTA, A Method to Increase CHF for Forced Convective Boiling in Narrow Gaps Applied to Heat Sinks for Semiconductors with High Heat Generation Rate, The 1st International Symposium on Micro & Nano Technology (ISMNT-1), 2004.03.
13. Increase of CHF for Flow Boiling in Narrow Channels
Yasuhisa Shinmoto , Haruhiko Ohta.
Membership in Academic Society
  • The Japan Society of Microgravity Application (JASMA)
  • Research Group of Boiling and Two-phase Flow in Microgravity
  • The Japan Society for Aeronautical and Space Sciences (JSASS)
  • The Japan Society of Mechanical Engineers (JSME)
Educational
Educational Activities
Students:


Graduate Students: