Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Visualizations of Gas-centered Swirl Sprays in Sub to Super Critical Conditions

임계조건에 따른 기체중심 스월 분무의 가시화 시험

  • Kim, Dohun (School of Mechanical and Aerospace Engineering, Korea Aerospace University) ;
  • Lee, Keonwoong (School of Mechanical and Aerospace Engineering, Korea Aerospace University) ;
  • Son, Min (School of Mechanical and Aerospace Engineering, Korea Aerospace University) ;
  • Koo, Jaye (Department of Mechanical and Aerospace Engineering, Korea Aerospace University)
  • Received : 2013.12.10
  • Accepted : 2014.05.15
  • Published : 2014.06.01
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Abstract

The gas-centerd swirl injectors are widely used on the main combustor of large liquid propellant rocket engines. Since the gas-liquid propellants, such as kerosene and oxygen-rich gas combination, are mixed and burned in the high pressure condition over the critical pressure point, the cold-flow spray test in the atmospheric condition can not represent the actual spray pattern. To observe the near actual spray patterns of gas-centered swirl injector, the high pressure spray chamber and the control system were constructed. The operating sequence was controlled precisely to obtain clear visualization images.

기체중심 스월 인젝터는 대형 액체 로켓 엔진의 주연소기로 광범위하게 사용되고 있다. 케로신과 산소과잉 가스와 같은 기체-액체 추진제들은 임계 압력 이상의 높은 압력 조건에서 혼합, 연소되므로 대기조건에서의 비연소 분무실험은 실제적인 분무 거동을 정확히 재현할 수 없다. 기체중심 스월 인젝터에서 실제 조건과 유사한 분무 패턴을 관측하기 위해서, 고압 챔버와 제어 시스템이 구성되었고 선명한 가시화 결과를 얻기 위하여 실험 과정이 정밀하게 제어되었다.

Keywords

References

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