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Bubble Formation under Microgravity

Research Project

Project/Area Number 06650865
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 化学工学一般
Research InstitutionKeio University

Principal Investigator

TSUGE Hideki  Keio University Fac.of Science and Techonology Professor, 理工学部, 教授 (70051688)

Co-Investigator(Kenkyū-buntansha) TERASAKA Koichi  Keio University Fac.of Science and Techonology Assistant Professor, 理工学部, 専任講師 (00245606)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1995: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1994: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsMicrogravity / Bubble / Bubble formation / Bubble formation mode
Research Abstract

For the basic design of chemical prants in space stations and on plantes except the earth, few chemical engineering deta have been known. For gas-liquid contacting equipment, such as fermentors, gas absorbers or chemical ractors opectors under microgravity conditions, it is important to make clear the effencts of various factors on the volume and shape of bubble formed at orifices or nozzles. To clarify the behavior of bubble formation in quiescent liquids under microgravity, the effects of gas flow rate and sturface tension on bubble formation were investigated experimentally during 10 seconds by the drop shaft of JAMIC (Japan Microgravity Center) at Kamisunagawa in Hokkaido. To describe theoretically bubble formation in quiescent liqiods under microgravity, the non-sperical bubble formation model proposed by the authors was used ant the calculated results of bubble volume were compared with the experimental ones. It is predicted by this model that bubble volume increases under constant flow condition and a bubble does not detach from a nozzle when gas flow rate is small in quiescent liquid. These calculated resurts of bubble volume agreed well with the experimental ones.
To disperse bubbles uniformly in the liquid, bubbles were formed in flowing liquids under microgrkavity, and the effects of liquid velocity and the direction of gas-liquid flows, that is, cocurrent and crosscurrent flows, on the bubble volume were determined experimentally.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 柘植秀樹ら: "微小重力下での気泡生成に及ぼす諸操作因子の影響" 化学工学シンポジウムシリーズ. 50. 58-62 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 柘植秀樹ら: "微小重力下での気泡生成に関する一考察" 化学工学会第26回秋季大会講演要旨集. R202 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 柘植秀樹ら: "微小重力下での気泡生成" 化学工学会第27回秋季大会講演要旨集. 1. 360 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 寺坂宏一ら: "微小重力下での液中におかれた単一孔よりの気泡生成" 宇宙利用シンポジウム講演集. 175-178 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 柘植秀樹ら: "微小重力下での気泡生成に及ぼす諸操作因子の影響" 化学工学会第28回秋季大会講演要旨集. 1. 354 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsuge, H.et al.: "Effect of various factors on bubble formation under microgravity" Chem.Eng.Symp.Ser.50. 58-62 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsuge, H.et al.: "Study on bubble formation under microgravity" Perprint of 26th Annual Meeting of SCEJ. R202. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsuge, H.et al.: "Bubble formation under microgravity" Preprint of 27th Annual Meeting of SCEJ. 1. 360 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Terasaka, K.et al.: "Bubble formation from an orifice in liquids under microgravity" Abstract of symposium of space utilization. 175-178 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Tsuge, H.et al.: "Effect of various factors on bubble formation under microgravity" Preprint of 28th Annual Meeting of SCEJ. 1. 354 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 柘植秀樹: "微小重力下での気泡生成" 化学工学会第27回秋期大会講演要旨集. 1. 360- (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 寺坂宏一: "微小重力下での液中におかれた単一孔よりの気泡生成" 宇宙利用シンポジウム講演集. 175-178 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 柘植秀樹: "微小重力下での気泡生成に及ぼす諸操作因子の影響" 化学工学会第28回秋期大会講演要旨集. 1. 354- (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 柘植秀樹: "微小重力下での気泡生成" INCHEN TOKYO'95学会特別展示パネルリスト. 18- (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 柘植秀樹: "気泡生成における気液界面の挙動" 表面. 9. 733-740 (1992)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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