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2005 Fiscal Year Final Research Report Summary

Development of Hybrid Gas Bearing Effectively Stabilized by Water Evaporation from Ultra-Fine Porous Medium

Research Project

Project/Area Number 15360108
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionKyoto University

Principal Investigator

YOSHIDA Hideo  Kyoto University, Department of Engineering, Professor, 工学研究科, 教授 (50166964)

Co-Investigator(Kenkyū-buntansha) IWAI Hiroshi  Kyoto University, Department of Engineering, Lecture, 工学研究科, 講師 (00314229)
SAITO Motohiro  Kyoto University, Department of Engineering, Research Associate, 工学研究科, 助手 (90314236)
Project Period (FY) 2003 – 2005
KeywordsHybrid Gas Bearing / Water Evaporation / Porous Medium / Micro Gas Turbine
Research Abstract

A hybrid gas bearing effectively stabilized by water evaporation from ultra-fine porous medium is proposed and its basic characteristics are clarified by numerical simulation and experiment. The proposed bearing aims to be applied to MGT (Micro Gas Turbine) and has mainly three advantages suitable for application to MGT. The first is the stability improved by water evaporation from ultra-fine porous medium. The second is the effective lubrication by liquid water at the start and stop of the journal rotation. The third is the cooling effect on the high-temperature journal due to water evaporation. Numerical analysis revealed that the hybrid gas bearing is more stable than a conventional gas bearing. The characteristics of the start-up, liquid lubrication and transition state were experimentally examined with heating of journal, and finally the vapor lubrication was achieved.

  • Research Products

    (13 results)

All 2006 2004 2003 2002 Other

All Journal Article (12 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] 水蒸発による静圧効果が付加された超微細多孔質体ハイブリッド気体軸受2006

    • Author(s)
      吉田英生, 他
    • Journal Title

      第43回日本伝熱シンポジウム講演論文集 1

      Pages: 249-250

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hybrid Gas Bearing Effectively Stabilized by Water Evaporation from Ultra-Fine Porous Medium2006

    • Author(s)
      Hideo YOSHIDA, et al.
    • Journal Title

      Proc. of The Seventeenth International Symposium on Transport Phenomena (submitted)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hybrid Gas Bearing Effectively Stabilized by Water Evaporation from Ultra-Fine Porous Medium2006

    • Author(s)
      H.Yoshida, H.Ishibe, S.Yoshitomi, M.Saito, H.Matsui, T.Egawa, H.Iwai, H.Tsubota, T.Kuwabara, K.Kanamaru
    • Journal Title

      43rd National Heat Transfer Symposium of Japan (in Japanese) (in printing)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Hybrid Gas Bearing Effectively Stabilized by Water Evaporation from Ultra-Fine Porous Medium2006

    • Author(s)
      H.Yoshida, M.Saito, S.Yoshitomi, H.Matsui, T.Egawa, H.Iwai, H.Tsubota, T.Kuwabara, K.Kanamaru, H.Ishibe
    • Journal Title

      Proc. of The Seventeenth International Symposium on Transport Phenomena (submitted)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Basic Characteristics of Hybrid Gas Bearing with Water Evaporation from Ultra-Fine Porous Medium2004

    • Author(s)
      Hideo YOSHIDA, et al.
    • Journal Title

      Proc. of 10th Brazilian Congress of Thermal Engineering and Sciences

      Pages: CIT 04-0774

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Basic Characteristics of Hybrid Gas Bearing with Water Evaporation from Ultra-Fine Porous Medium2004

    • Author(s)
      H.Yoshida, H.Ishibe, H.Matsui, T.Egawa, S.Yoshitomi, M.Saito, K.kuwabara
    • Journal Title

      Proc. of 10th Brazilian Congress of Thermal Engineering and Sciences CIT 04-0774

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 超微細多孔質表面からの水蒸発を伴うハイブリッド気体軸受(第2報)2003

    • Author(s)
      吉田英生, 他
    • Journal Title

      第40回日本伝熱シンポジウム講演論文集 1

      Pages: 171-172

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hybrid Gas Bearing with Water Evaporation from Ultra-Fine Porous Medium2003

    • Author(s)
      Hideo YOSHIDA, et al.
    • Journal Title

      Proceedings of the International Conference on Power Engineering- 03 (ICOPE- 03) 3

      Pages: 79-84

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hybrid Gas Bearing with, Water Evaporation from Ultra-Fine Porous Medium : 2nd Report2003

    • Author(s)
      H.Yoshida, H.Ishibe, H.Matsui, T.Egawa, M.Saito, S.Yoshitomi
    • Journal Title

      40rd National Heat Transfer Symposium of Japan (in Japanese) Vol.1

      Pages: 171-172

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Hybrid Gas Bearing with Water Evaporation from Ultra-Fine Porous Medium2003

    • Author(s)
      H.Yoshida, H.Ishibe, H.Matsui, T.Egawa, M.Saito, S.Yoshitomi
    • Journal Title

      Proceedings of the International Conference on Power Engineering-03

      Pages: 79-84

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 水蒸発による静圧効果が付加された超微細多孔質金属製ハイブリッド気体軸受

    • Author(s)
      吉田英生, 他
    • Journal Title

      日本機械学会論文集B編 (投稿中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Hybrid Gas Bearing Effectively Stabilized by Water Evaporation from Ultra-Fine Porous Medium

    • Author(s)
      H.Yoshida, H.Ishibe, S.Yoshitomi, M.Saito, H.Matsui, T.Egawa, H.Iwai, H.Tsubota, T.Kuwabara, K.Kanamaru
    • Journal Title

      Transaction of the Japan Society of Mechanical Engineers B (in Japanese) (submitted)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Patent(Industrial Property Rights)] ハイブリッド気体軸受2002

    • Inventor(s)
      吉田英生, 石部英臣
    • Industrial Property Rights Holder
      日本精線(株), 関西TLO(株)
    • Industrial Property Number
      特願2002-152145
    • Filing Date
      2002-05-27
    • Description
      「研究成果報告書概要(和文)」より

URL: 

Published: 2007-12-13  

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