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Sound Wave Propagation in Two-Phase Flow of Magnetic Fluid

Research Project

Project/Area Number 02650135
Research Category

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

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionTohoku University

Principal Investigator

TSUBOTA Makoto  Tohoku Univ., Inst. of Fluid Science, Assoc. Prof, 流体化学研究所, 助教授 (10197759)

Co-Investigator(Kenkyū-buntansha) YAMASAKI Takasuke  Kochi Univ.,Dep. of Agriculture, Prof., 農学部, 教授 (00036724)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1992: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1991: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1990: ¥900,000 (Direct Cost: ¥900,000)
KeywordsMagnetic Fluid / Two-Phase Flow / Sound Wave / Boid Fraction / Dispersion / Phase Velocity / Decay Rate / 磁性流体 / 二相流 / 衝撃波
Research Abstract

The progress of magnetic fluid research has attracted considerable interest in the technological applications of magnetic fluids and led to the production of many useful devices. However, the physical properties of the materials have not yet been fully revealed. Wave propagation through magnetic fluid under a magnetic field is one of the important problems in studying the properties of high speed flow in magnetic fluids, and some studies on it have been described in the literatures. However, there exists little knowledge about two-phase magnetic fluids, whose investigations are very important for the development of practical engineering applications of magnetic fluids.
We have measured phase velocity of sound waves in two-phase magnetic fluids, and found it increses with applied magnetic field strength. The velocity normalized by cancelling the effect of void fractions also increases with field strength, which does not result from a dispersion relationship in the fluids. The increase in phase velocity cannot explained quantitatively by calculation of homogenius two-phase flow. These results are compatible with our previous investigations on shock waves in two-phase magnetic fluids.

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 坪田,山崎,神山: "磁性流体二相流中の音波の伝播に関する研究(第3報)" 第5回「電磁力関連のダイナミックス」シンポジウム講演論文集.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.YAMASAKI,M.TSUBOTA,S.KAMIYAMA: "Sound Propagation in Two-Phare Flow of Magnetic Flnid" Jonrmal of Magnetism and Magnetic Materials. 85. 147-150 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 坪田,岡山,神山,山崎: "磁性流体二相流の音波の伝播" 日本機械学会東北支部八戸地方講演会講演論文集. 255-257 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 田中,山崎,神山,坪田,入,滝石: "水・空気均質二相流中の非線形波動の伝播" 第40回応用力学連合講演会講演論文集. 189-192 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 坪田,神山,田中,山崎: "印加磁場下磁性流体気液二相流における非線形波動の伝播" 磁性流体連合講演会講演論文集. 19-21 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 松岡,坪田,山崎,神山: "磁性流体気液二相流中の音波の伝播に関する研究(第2報)" 磁性流体連合講演会論文集. 28-30 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] T.Yamasaki, M.Tsubota, S.Kamiyama: "Sound Wave Propagation in Two-Phase Flow of Magnetic Fluid" Jour. Mag. Mag. Mat.vol.85. 147-150 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 坪田,山崎,神山: "磁性流体気液二相流中の音波の伝播に関する研究(第3報)" 第5回「電磁力関連のダイナミックス」シンポジウム講演論文集.

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Yamazaki,M.Tsubota S.Kamiyama: "Sound Wave Propagation in TwoーPhase Flow of Magnetic Fluid" Jonrnal of Magnetism and Magnetic Materials. 85. 147-150 (1990)

    • Related Report
      1992 Annual Research Report
  • [Publications] 坪田,岡山,神山,山崎: "磁性流体二相流の音波の伝播" 日本機械学会東北支部 八戸地方講演会講演論文集. 255-257 (1990)

    • Related Report
      1992 Annual Research Report
  • [Publications] 田中,山崎,神山,坪田,入,滝石: "水・空気均質二相流中の非線形波動の伝播" 第40回応用力学連合講演会講演論文集. 189-192 (1990)

    • Related Report
      1992 Annual Research Report
  • [Publications] 坪田,神山,田中,山崎: "印加磁場下磁性流体気液二相流における非線形波動の伝播" 磁性流体連合講演会講演論文集. 19-21 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] 松岡,坪田,山崎,神山: "磁性流体気液二相流中の音波の伝播に関する研究(第2報)" 磁性流体連合講演会講演論文集. 28-30 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] 松岡,坪田,山崎,神山: "磁性流体気液二相流中の音波の伝播に関する研究(第2報)" 磁性流体連合講演会講演論文集. 28-30 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Yamasaki,M.Tsubota,S.Kamiyama: "Sound Wave Propagation in TwoーPhase Flow of A Magnetic Fluid" Journal of Magnetism and Magnetic Materials. 85. 147-150 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 坪田 誠,岡山 新史,神山 新一,山崎 尭右: "磁性流体二相流の音波の伝播" 日本機械学会東北支部八戸地方講演会講演論文集. 901ー2. 255-257 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 坪田 誠,神山 新一,田中 忠芳,山崎 尭右: "印加磁場下磁性流体気液二相流における非線形波動の伝播" 磁性流体連合講演会講演論文集. 1991ー1. 19-21 (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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