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AN INVESTIGATION ON A SUPERSONIC FLOW CO CHEMICAL LASER

Research Project

Project/Area Number 63550130
Research Category

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

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionNagaoka University of Technology

Principal Investigator

MASUDA Wataru  NAGAOKA UNIVERSITY OF TECHNOLOGY, FACULTY OF ENGINEERING, ASSOCIATE PROFESSOR, 工学部, 助教授 (80143816)

Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1989: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1988: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsSupersonic Flow / Reactive Flow / Laser / Chemical Laser / Carbon Monoxide / レーザー / 化学レーザー
Research Abstract

Small signal gain coefficients of a supersonic flow CO chemical laser were measured using a shock tunnel facility. The visual observation of the chemical luminescence from various reactions in the laser cavity were also performed and it was shown that the development of the mixing layer in the downstream direction is very gradual as was demonstrated by the numerical calculation using the thin shear layer approximation. The numerical calculation showed that the small signal gain coefficients begin to decrease at a location where the mixing layer is still a small portion of the total flow width. Therefore, much smaller nozzles than those of the present experiment are desirable in order to attain a higher average gain. The predicted distribution of the gains along the flow agreed fairly well with the experimental results. It was clearly demonstrated that the presence of the boundary layers and the magnitude of the wall catalysis play decisive roles in determining the laser performance.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 増田渉、白石和彦、佐藤正史: "超音速流CO化学レ-ザの流れ場の観察と利得の測定" 日本機械学会論文集. 55. 3697-3702 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] W.Masuda,and H.Hiraide: "Numerical Analysis on the Reaction Zone Structure of a Supersonic Flow CO Chemical Laser" JSME Int.J.32. 605-612 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] W.Masuda,S.Sasagawa,and M.Tohyama: "Numerical Simulation for the Power of a Supersonic Flow CO Chemical Laser Using a Leaky Stream Tube Approach" JSME Int.J.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] W.Masuda,M.Ikarashi,and K.Shiraishi: "Measurements of Small Signal Gain Coefficients of a Supersonic Flow CO Chemical Laser" JSME Int.J.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] W.Masuda and H.Hiraide: "Investigation on the Theoretical Modeling of a Supersonic Flow CO Chemical Laser" JSME Int.J.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] W. Masuda, K. Shiraishi and M. Satoh: "Visual Observation and Gain Measurements of a Supersonic Flow CO Chemical Laser" Trans. JSME, Vol.55, No.520, pp.3697-3702, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] W. Masuda and H. Hiraide: "Numerical Analysis on the Reaction Zone Structure of a Supersonic Flow CO Chemical Laser" JSME Int. J., Vol.32, No.4, pp.605-612, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] W. Masuda, S. Sasagawa and M. Tohyama: "Numerical Simulation for the Power of a Supersonic Flow CO Chemical Laser Using a Leaky Stream Tube Approach" JSME Int. J.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] W. Masuda, M. Ikarashi and K. Shiraishi: "Measurements of Small Signal Gain Coefficients of a Supersonic Flow CO Chemical Laser" JSME Int. J.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] W. Masuda and H. Hiraide: "Investigation on the Theoretical Modeling of a Supersonic Flow CO Chemical Laser" JSME Int. J.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 増田渉,白石和彦,佐藤正史: "超音速流CO化学レ-ザ-の流れ場の観察と利得の測定" 日本機械学会論文集. 55. 3697-3702 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] W.Masuda and H.Hiraide: "Numerical Analysis on the Reaction Zone Structure of a Supersonic Flow CO Chemical Laser" JSME Int.J.32. 605-612 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] W.Masuda,S.Sasagawa and M.Tohyama: "Numerical Simulation for the Power of a Supersonic Flow CO Chemical Laser Using a Leaky Stream Tube Approach" JSME Int.J.

    • Related Report
      1989 Annual Research Report
  • [Publications] W.Masuda,M.Ikarashi and K.Shiraishi: "Measurements of Small Signal Gain Coefficients of a Supersonic Flow CO Chemical Laser" JSME Int.J.

    • Related Report
      1989 Annual Research Report
  • [Publications] W.Masuda and H.Hiraide: "Investigation on the Theoretical Modeling of a Supersonic Flow CO Chemical Laser" JSME Int.J.

    • Related Report
      1989 Annual Research Report
  • [Publications] 増田渉: 日本機械学会論文集.

    • Related Report
      1988 Annual Research Report
  • [Publications] 増田渉: 日本機械学会論文集.

    • Related Report
      1988 Annual Research Report
  • [Publications] 増田渉: Proc.7th Int.GCL Symp.

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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