Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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A Study of the Influence of the Injection Location of Supersonic Sweeping Jet for the Control of Shock-Induced Separation

경사충격파 박리유동 제어를 위한 초음속 진동제트 분출위치의 영향성 연구

  • Park, Sang-Hoon (Dept. of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Lee, Yeol (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • Received : 2022.04.27
  • Accepted : 2022.08.29
  • Published : 2022.11.01
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Abstract

An experimental study was carried out to control a shock-induced boundary layer separation by utilizing the supersonic sweeping jet from the fluidic oscillator. High-speed schlieren, surface flow visualization, wall pressure measurement and precise Pitot tube measurement were applied to observe the influences of the location and the supply pressure of the fluidic oscillator on the characteristics of the oblique-shock-induced boundary layer separation. The characteristics of the separation control by the present supersonic fluidic oscillator was quantitatively analyzed by comparing with a conventional control method utilizing an air-jet vortex generator.

유체진동기에서 분출되는 초음속 진동제트를 이용하여 충격파에 의한 경계층 박리유동을 제어하는 실험적 연구가 이루어졌다. 유체진동기의 위치와 제어압력의 변화가 경사충격파에 의하여 발생되는 경계층 박리유동의 특성에 미치는 영향이 관찰되었고, 이를 위하여 고속 슐리렌, 표면유동가시화, 벽압력 측정, 그리고 정밀 피토관 측정 기법이 적용되었다. 본 연구의 초음속 진동제트의 박리유동 제어 특성은 공기제트 와류를 이용한 기존 제어기법과 정량적으로 비교 분석되었다.

Keywords

Acknowledgement

이 성과는 정부의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. 2021R1F1A106016911)

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