Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Current Research Status on Flame Response Characteristics to Flow Disturbances

유동섭동에 대한 화염응답 특성의 실험적 연구동향

  • Seo, Seonghyeon (Department of Mechanical Engineering, Hanbat National University) ;
  • Park, Yongjin (Department of Mechanical Engineering, Hanbat National University)
  • Received : 2014.07.09
  • Accepted : 2014.09.16
  • Published : 2014.10.01
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Abstract

It becomes critical to understand an energy coupling mechanism between flow perturbations and combustion heat release rate fluctuations for the understanding of high-frequency combustion instabilities occurring in high-performance combustion/propulsion systems. A significant amount of experimental researches have been carried out to understand flame dynamic characteristics by use of flame transfer functions with artificial flow disturbances. Among them, there exist substantial studies on flame response by the excitation of inlet flow. Recently, experimental studies simulating transversal modes excited in actual combustion systems are under way.

고성능 연소추진 시스템의 고주파 연소불안정 현상을 이해하기 위해서는 연소 열발생과 유동 섭동간의 에너지 교환 메커니즘 이해가 필수적이다. 화염의 동적 특성 변화를 인위적인 섭동을 통해 화염전달함수로 표현하고 이해하고자 하는 다수의 실험적 연구가 진행되어 왔다. 이 가운데 특히 연소기 입구 유동에 섭동을 가진하여 축 방향 섭동에 대한 화염반응을 살펴보는 연구가 활발히 진행되었다. 최근에는 실제 연소시스템에서 발생하는 횡 방향 음향모드를 모의하는 연구들이 진행되고 있다.

Keywords

References

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