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Post-Shock Expansion Phenomenon in Supersonic Internal Flow

Research Project

Project/Area Number 02452119
Research Category

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

Allocation TypeSingle-year Grants
Research Field Fluid engineering
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

MATSUO Kazuyasu  Kyushu University, Graduate School of Engineering Sciences, Professor, 総合理工学研究科, 教授 (30037759)

Co-Investigator(Kenkyū-buntansha) AOKI Toshiyuki  Kyushu University, Graduate School of Eng.Sciences, Associate Professor, 総合理工学研究科, 助教授 (20150922)
川越 茂敏  九州大学, 総合理工学研究科, 助手 (10044546)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 1992: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1991: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1990: ¥3,400,000 (Direct Cost: ¥3,400,000)
KeywordsSupersonic flow / Shock wave / Interaction with boundary layer / Post-shock expansion / Internal flow
Research Abstract

1. The post-shock expansion phenomenon caused by the interaction of a normal shock wave with a turbulent boundary layer in supersonic internal flows is responsible for the curviness of interacting shock, the flow blockage, and the expansion waves behind the bifurcation shock system. The post-shock expansion appears as the shock-induced separation occurs.
2. The post-shock expansion becomes stronger as the flow Mach number as well as the divergence angles of the nozzle or diffuser increases. As the Mach number increases over a critical value, the post-shock expansion transforms into the pseudo-shock pattern.
3. The incipient post-shock expansion occurs at nearly constant wall Mach number even the divergence angle of diffuser is varied. It implies that the concept of free interaction observed in a variety of external flows should be also applied to internal supersonic flows.
4. The unsteadiness caused by the shock wave/turbulent boundary layer interaction was investigated experimentally. The frequencies of oscillating shock wave in internal flows are much lower than those in external flows. The maximum root-mean-square values of fluctuating pressures increase with an increase in flow Mach number and they are significantly affected by flow separation. A flow model of oscillating shock waves in internal supersonic flows is presented.

Report

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

Research Products

(23 results)

All Other

All Publications (23 results)

  • [Publications] 金 義東: "The Post-Shock Expansion in a Supersonic Nozzle" Proceedings of the 2nd KSME-JSME Fluids Engineering Conference. 2. 52-57 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 金 義東: "Analytical Study on Post-Shock Expansion in Transonic Flow" 九州大学総合理工学研究科報告. 12. 319-328 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 金 義東: "Flow Unsteadiness by Weak Normal Shock Wave/Turbulent Boundary Layer Interaction in Internal Flow" JSME International Journal. 34. 457-465 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 松尾 一泰: "Measurement of Oscillating Shock Wave in Supersonic Nozzle" Flow Visualization. 6. 612-616 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 松尾 一泰: "Post-Shock Expansion Phenomenon Caused by Normal Shock/Turbulent Boundary Layer Interaction" JSME International Journal. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 松尾 一泰: "Normal Shock Wave Oscillations in Supersonic Diffusers" Shock Waves-An International Journal. (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Heuy-Dong Kim: "The Post-Shock Expansion in a Supersonic Nozzle" Proceedings of the 2nd KSME-JSME Fluids Engineering Conference. Vol.2. 52-57 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Heuy-Dong Kim: "Analytical Study on Post-Shock Expansion in Transonic Flow" Engineering Science Reports of Kyushu University. Vol.12,No.3. 319-328 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Heuy-Dong Kim: "Flow Unsteadiness by Weak Normal Shock Wave/Turbulent Boundary Layer Interaction in Internal Flow" JSME International Journal. Vol.34,No.4. 457-465 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kazuyasu Matsuo: "Measurement of Oscillating Shock Waves in Supersonic Nozzle" Flow Visualization. Vol.6. 612-616 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kazuyasu Matsuo: "Post-Shock Expansion Caused by Normal Shock/Turbulent Boundary Layer Interaction" JSME International Journal. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Kazuyasu Matsuo: "Normal Shock Wave Oscillations in Supersonic Diffusers" Shock Waves-An International Journal. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 金 羲東: "The Post-Shock Expansion in a Supersonic Nozzle" Proceedings of the 2nd KSME-JSME Fluids Engineering Conference. 2. 52-57 (1990)

    • Related Report
      1992 Annual Research Report
  • [Publications] 金 羲東: "Analytical Study on Post-Shock Expansion in Transonic Flow" 九州大学総合理工学研究科報告. 12. 319-328 (1990)

    • Related Report
      1992 Annual Research Report
  • [Publications] 金 羲東: "Flow Unsteadiness by Weak Normal Shock Wave/Turbulent Boundary Layer Interaction in Internal Flow" JSME International Journal. 34. 457-465 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] 松尾 一泰: "Measurement of Oscillating Shock Wave in Supersonic Nozzle" Flow Visualization. 6. 612-616 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 松尾 一泰: "Post-Shock Expansion Phenomenon Caused by Normal Shock/Turbulent Boundary Layer Interaction" JSME International Journal. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 松尾 一泰: "Normal Shock Wave Oscillations in Supersonic Diffusers" Shock Waves-An International Journal. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 松尾 一泰: "The PostーShock Expansion in a Supersonic Nozzle" Proceedings of the and KSMEーJSME Fluid Engineering Conference. 2. 52-57 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 松尾 一泰: "Analytical Study on PostーShock Expansion in Transonic Flow" 九州大学総合理工学研究科報告. 12. 319-328 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 松尾 一泰: "ラインシメ-ジセンサによる衝撃波の振動の計測" 可視化情報. 11. 231-234 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 松尾 一泰: "The PostーShock Expansion in a Supersonic Nozzle" Proceedings of the and KSMEーJSME Fluid Engineering. 2. 52-57 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 松尾 一泰: "Analytical Study on PostーShock Expansion in Transonic Flow" 九州大学総合理工学研究科報告. 12. 319-328 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-03-31   Modified: 2016-04-21  

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