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

  • 제32권6호
  • /
  • Pages.104-109
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  • 2004
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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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주위 기체밀도와 분사속도에 따른 충돌제트의 미립화 특성

Effect of ambient gas density and injection velocity on the atomization characteristics of impinging jet

  • 임병직 (서울대학교 기계항공공학부) ;
  • 정기훈 (서울대학교 기계항공공학부) ;
  • 길태옥 (서울대학교 기계항공공학부) ;
  • 윤영빈 (서울대학교 기계항공공학부)
  • 발행 : 2004.08.01
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초록

본 논문에서는 액체로켓 엔진에 많이 사용된 충돌형 분사기의 미립화 특성에 대해 연구하였다. 분사속도와 주위 기체압력은 분열과 미립화 과정에 결정적인 영향을 주는 변수로서 $3m/s{\sim}30m/s,\;0.1Mpa{\sim}4.0MPa$로 변화시키면서 실험을 수행하였다. 전체적으로 분사속도와 기체압력의 증가에 따라 측정된 분열길이, 분열파장, 액적크기 등이 감소하였다. 하지만 그 감소율은 이론에서 예측된 것과는 다른 값을 나타내었다.

On this paper study is concentrated on the breakup and atomization characteristics of spray formed by impinging jet injectors(like-doublet) used in liquid rocket engine(LRE). On the process of breakup and atomization, injection velocity and ambient gas pressure are the main parameters, so that these are used as variables that specify the experimental condition. Injection velocity varied from 3m/s to 30m/s and ambient gas pressure changed from 0.1MPa to 4.0MPa with nitrogen gas. As results, measured physical quantities decreased with increasing injection velocity and ambient gas pressure. But the decreasing ratios are different from those of the theory.

키워드

참고문헌

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