한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제12권6호
  • /
  • Pages.38-47
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  • 2008
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  • 1226-6027(pISSN)
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  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
권호 표지

수직분사제트에서 다양한 분사각도의 분무궤적 특성에 대한 실험적 연구

An Experimental Study on the Trajectory Characteristics of Liquid Jet with Canted Injection Angles in Crossflow

  • 김민기 (서울대학교 기계항공공학부 대학원) ;
  • 송진관 (서울대학교 기계항공공학부 대학원) ;
  • 황정재 (서울대학교 기계항공공학부 대학원) ;
  • 윤영빈 (서울대학교 기계항공공학부, 항공우주신기술연구소(IAAT))
  • 발행 : 2008.12.30
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초록

횡방향으로 유입되는 공기유동에서 연료 제트의 액주 및 액적영역의 궤적에 관한 연구를 수행하였다. 실험방법으로는 직접사진촬영방법과 평면레이저유도형광 기법을 사용하여 분석하였다. 본 연구의 목적은 공기유동 방향에 수직으로 분사되는 분무와 분사각도의 분무에서 궤적에 대한 경험식을 도출하여 기존 연구결과와 비교분석하고, 대향분사에서의 궤적에 대한 경험식을 도출하는데 있다. 실험을 통하여 액주 및 액적 영역의 궤적은 연료분사차압, 공기의 유속, 분사기 지름 크기, 분사각도에 의하여 결정되며, 정방향의 분무와 대향분사 결과에 있어서는 실험식 상수의 차이가 있음을 확인하였다.

The liquid column and spray trajectory have been experimentally studied in liquid jets injected into subsonic crossflow. With water as fuel injection velocity, injection angle were varied to provide of jet operation conditions. The Pulsed Shadowgraph Photography and Planar Liquid Laser Induced Fluorescence technique was used to determine the injection characteristics in a subsonic crossflow of air. And the mainly objectives of this research was to get a empirical formula of liquid column and spray region trajectory with forward and reversed injection of air stream. As the result, This research has been shown that each trajectories were spatially dependent on air-stream velocity, fuel injection velocity, various injection angle, and normalized injector exit diameter. Furthermore, the empirical formula of liquid column trajectories has been some different of drag coefficient results between forward and reversed angled injection.

키워드

참고문헌

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