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

  • 제37권2호
  • /
  • Pages.166-174
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  • 2009
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  • 1225-1348(pISSN)
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  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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아음속 수직분사제트에서 분사각도 영향에 대한 분무특성 연구

Effects of Angled Injection on the Spray Characteristics of Liquid Jets in Subsonic Crossflow

  • 김민기 (서울대학교 기계항공공학부 대학원) ;
  • 송진관 (서울대학교 기계항공공학부 대학원) ;
  • 이장수 (서울대학교 기계항공공학부 대학원) ;
  • 윤영빈 (서울대학교 기계항공공학부 항공우주신기술연구소(IAAT))
  • 발행 : 2009.02.01
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초록

본 연구에서는 횡단류 아음속유동장에서 연료가 여러 분사각도를 가지고 수직 분무시 나타나는 액주영역의 궤적과 분열지점에 관한 연구를 수행하였다. 직접 사진촬영 방법과 평면레이저유도형광(PLLIF) 기법으로 정방향 분사각도의 분무에서 액주영역의 궤적식과 분열지점까지의 거리에 대한 경험식을 도출하여 기존 연구결과와 비교 분석하고 대향분사의 액주 궤적식과 분열지점까지의 거리에 대한 경험식을 도출하였다. 실험을 통하여 액주영역의 궤적과 분열지점까지의 거리는 분사차압, 공기의 유속, 인젝터 지름 크기, 분사각도에 의하여 결정됨을 확인하였다.

The liquid column trajectory and column breakup length characteristics have been experimentally studied in angled jets injected into subsonic crossflow. Pulsed shadowgraph photography and Planar Liquid Laser Induced Fluorescence measurements were used to determine the angled effects. And the main objectives of this research are to get a empirical formula of liquid column trajectory and breakup length with below the $90^{\circ}$ degree injection angle conditions, and were compared with previous results. It was also found that the empirical formula, which reversed injection conditions of air stream. As the result, This has been shown that liquid column trajectories and column breakup length were spatially dependent on various injection angle, normalized injector exit diameter, air-stream and fuel injection velocity. Furthermore, the empirical formula of liquid column trajectories and breakup length has been some different of drag coefficient results between normal angled injection and reversed injection in subsonic crossflow.

키워드

참고문헌

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