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High velocirt flows of dense gases

Research Project

Project/Area Number 05805081
Research Category

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

Allocation TypeSingle-year Grants
Research Field Aerospace engineering
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

ISHII Ryuji  Kyoto Univ.Faculty of Eng.Assoc.Prof., 工学部, 助教授 (20026339)

Co-Investigator(Kenkyū-buntansha) UMEDA Yoshikuni  Kyoto Univ.Faculty of Eng.Instr., 工学部, 助手 (30026132)
MORIOKA Shigeki  Kyoto Univ.Faculty of Eng.Prof., 工学部, 教授 (60029395)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1994: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1993: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsDense Gas / Supersonic Flow / Expansion Shock / Condensation / Evaporation / 高速流動特性
Research Abstract

1.The shock transition in the van der Waals gas has been studied analytically and numerically. It was proved that two shock adiabatics in the pV-plane can intersect at four points. This never occurs in the perfect gas. In special cases, a single shock was equivalently effected by two successive shock transitions. The supersonic-supersonic shock waves were stably simulated at least numerically.
2.A shock tube for n-pentan was constructed and the basic experiments were performed to check the validity and the security of the equipment.
3.A relected shock tunnel was designsd and constructed. Freejets of n-pentan were realized in the shock tunnel and the liquifaction shock and the shock splitting were observed by optical method (Shlieren photographs) .
4.From the theoretical analysis, it was proved that the gas stste with a negative fundamental derivative GAMMA is very difficult to be realized by the shock compression for n-pentan. This is because n-pentan has very large specific heat and then cannot effectively be heated by the shock compression. This suggests that the shock tube for very high temperature gas (300-400 K) is necessary to realize the gas state with negative GAMMA. Modification and improvement of the present equipment are needed for the future experimental study.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] Ryuji Ishii: "Bubbly flows through a converging-diverging nozzle." Physics of Fluids. A5. 1630-1643 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Yoshikuni Umeda: "Hole tone generation from highly choked jets." J. Acoust. Soc. America. Vol.94. 1058-1066 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryuji Ishii: "Structure of Shock Waves in Bubbly Liquid." Proc. of the 5th ISCFD-Sendai. Vol.II. 347-351 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Yoshikuni Umeda: "Oscillation modes of underexpanded jets issuing from square and equilateral triangular nozzles." J. Acoust. Soc. America. Vol.95. 1853-1857 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryuji Ishii: "Structure of Shock Waves in Bubbly Liquid." Mem. Fac. Eng. , Kyoto Univ.Vol.56. 147-175 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 宍戸 紀彦: "ファン・デル・ワールス流体で見られる蒸発波および凝縮波" 流れ. 13. 389-398 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryuji Ishii: "Research Trends in Physics of Fluids Vol.1." Council of Scientific Research Integration of INDIA (予定), 15 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryuji Ishii: "Bubbly Flows through a Convergent-Divergent Nozzle." Physics of Fluids. A5. 1630-1643 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Yoshikuni Umeda: "Hole tone generation from highly choked jets" J.Acoust.Soc.America. Vol.94. 1058-1066 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryuji Ishii: "Structure of Shock Waves in Bubbly Liquid Phase Shbsonic Freejets." Proc.5th ISCFD-Sendai. Vol.II. 347-351 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Yoshikuni Umeda: "Oscillation modes of underexpanded jets issuing from square and equilateral triangular nozzles." J.Acoust.Soc.America. Vol.95. 1853-1857 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Norihiko Shishido: "Evapolation and Condensation Waves in a van der Waals Gas. (in Japanese)" Nagare. Vol.13. 389-398 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryuji Ishii: "Shock Waves in a van der Waals Gas" Trans.Japan Soc.Aero.Space Sci.(to appear).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryuji Ishii: "Weak Shock Waves in Bubbly Liquid" Proc.2-nd ICMF'95-Kyoto. (to appear).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryuji Ishii: "Research Trend in Physics of Fluids Vol.1" CSRI of INDIA. 15 pages (to appear).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ryuji Ishii: "Bubbly flows through a converging-diverging nozzle" Physics of Fluids. A5. 1630-1643 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] Yoshikuni Umeda: "Hole tone generation from highly choked jets" J.Acoust.Soc.America. Vol.94. 1058-1066 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] Ryuji Ishii: "Structure of Shock Waves in Bubbly Liquid" Proc.of the 5th ISCFD-Sendai. Vol.II. 347-351 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] Yoshikuni Umeda: "Oscillation modes of underexpanded jets issuing from square and equilateral triangular nozzles." J.Acoust.Soc.America. Vol.95. 1853-1857 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Ryuji Ishii: "Structure of Shock Waves in Bubbly Liquid" Mem.Fac.Eng.,Kyoto Univ.Vol.56. 147-175 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 宍戸紀彦: "ファン・デル・ワールス流体で見られる蒸発波および凝縮波" 流れ. 13. 389-398 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Ryuji Ishii: "Research Trends in Physics of Fluids Vol.1.(予定)" Council of Scientific Research Integration of INDIA.(予定), 15 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] Ryuji Ishii: "Structure of Shock Wave in Bubbly Liquid" Proc.of the 5th Symp.on CFD-Sendai. Vol.2. 347-351 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Ryuji Ishii: "Bubbly flows through a converging-diverging Nozzle" Physics of Fluids A. Vol.A5. 83-104 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Yoshikuni Umeda: "Hole tone generated from highly choked jets" Journal of Acoustical Society of America. Vol.94. 1058-1066 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 宍戸紀彦: "ファン・デル・ワールス流体中の蒸発波・凝縮波" 第30回 日本航空宇宙学会・関西・中部支部 合同秋季大会 講演集. 17-18 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 橋本剛: "気泡流中の衝撃波の構造" 第30回 日本航空宇宙学会・関西・中部支部 合同秋季大会 講演集. 39-40

    • Related Report
      1993 Annual Research Report
  • [Publications] Ryuji Ishii: "Encyclopedia of Fluid Dynamics,Supplement 2" Gulf Publishing Company, 32 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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