한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제23권4호
  • /
  • Pages.70-80
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  • 2019
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  • 1226-6027(pISSN)
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  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
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기체메탄/기체산소 추진제를 이용한 동축 와류형 분사기에서의 예비 연소실험

Preliminary Combustion Tests in Bi-Swirl Coaxial Injectors Using Gaseous Methane/Gaseous Oxygen Propellants

  • Hwang, Donghyun (School of Mechanical Engineering, Chungbuk National University) ;
  • Bak, Sujin (School of Mechanical Engineering, Chungbuk National University) ;
  • Ahn, Kyubok (School of Mechanical Engineering, Chungbuk National University)
  • 투고 : 2019.04.13
  • 심사 : 2019.06.11
  • 발행 : 2019.08.01
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초록

화염 가시화가 가능한 모델 연소실에서 형상과 리세스 길이가 다른 6종의 동축 와류형 분사기를 이용한 연소실험을 수행하였다. 실제 추진제 대신 기체메탄과 기체산소를 사용하여, 분사기 설계와 실험 조건이 화염구조와 연소 안정성에 미치는 영향을 분석하였다. 실험조건뿐 아니라 리세스 길이 및 오리피스 직경과 같은 분사기 형상은 연소 안정성에 큰 영향을 미치는 것을 알 수 있었다. 또한 연소불안정의 발생에 따라 열방출 패턴의 형상이 달라지는 것이 확인할 수 있었다.

Combustion tests using six bi-swirl coaxial injectors with different shapes and recess lengths were performed in a model combustion chamber capable of flame visualization. By utilizing gaseous methane and gaseous oxygen instead of actual propellants, the effects of injector design and experimental conditions on the flame structure and combustion stability were analyzed. It was found that not only the experimental conditions but also the injector geometry such as the recess length and orifice diameter had a considerable influence on the combustion stability. In addition, it was confirmed that the heat release pattern changed with the occurrence of combustion instability.

키워드

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