Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Effects of Pressure Variation on the Combustion Characteristics of a Gaseous CH4/O2 Bipropellant in a Model Combustor

모델연소실 내 압력 변화가 메탄/산소 이원추진제의 연소특성에 미치는 영향

  • Choi, Sun (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Tae Young (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Kim, Hee Kyung (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Koo, Jaye (School of Mechanical and Aerospace Engineering, Korea Aerospace University) ;
  • Kwon, Oh Chae (School of Mechanical Engineering, Sungkyunkwan University)
  • Received : 2016.07.06
  • Accepted : 2016.11.21
  • Published : 2017.02.01
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Abstract

Liquid methane ($CH_4$)/oxygen ($O_2$) bipropellants have been recently considered as a next-generation propellant due to eco-friendly and non-toxic properties, low cost and high performance. In this study, the combustion characteristics of gaseous $CH_4/O_2$ nonpremixed coflow flames in a model combustor with variation of internal pressure are investigated through measuring the combustion stability limits and visualizing flames. Results show that the combustion stability limits are extended and the reaction region is widened with increasing internal pressure of the combustion chamber for fuel-rich condition.

메탄($CH_4$)/산소($O_2$) 액체이원추진제는 친환경성, 무독성, 경제성, 우수한 성능 등의 장점으로 최근 들어 차세대 친환경 이원추진제로서 관심을 받고 있다. 본 연구에서는 연소실 내 압력 변화에 따른 기체 메탄/산소 비예혼합 동축 화염의 연소안정한계를 측정하고, 화염 및 유동의 가시화를 통해 분사 조건 및 압력 변화에 따른 화염의 구조와 특성을 파악하였다. 연구 결과 연료과농 조건에서 연소실 내 압력이 증가할 경우 연소안정한계가 확장되고 반응 영역이 증가하는 것을 확인할 수 있었다.

Keywords

References

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