Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Combustion Instability in Gas Turbine Engines

가스터빈에서의 연소불안정 현상

  • 오정석 (서울대학교 기계항공공학부) ;
  • 윤영빈 (서울대학교 기계항공공학부)
  • Published : 2008.08.30
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Abstract

This paper described the general concept of combustion instability and its mechanism in gas turbine engines. The approaching method to study this phenomenon was introduced including the up-to-date research activity in tile world. Combustion instability is one of critical problems, still now, affecting engine performance, durability and operation. In addition it is known that this problem is caused by coupling between fuel or air flow fluctuation and heat release rate in gas turbine engines, which is related with NOx reduction strategies. Therefore, in order to understand the current status of combustion instability we reviewed the combustion instability phenomenon in gas turbine engines.

본 논문에서는 가스터빈에서의 연소불안정 현상과 그 메커니즘에 대해 살펴보았다. 연소불안정 연구를 위한 접근 방법이 논의되었고 전 세계 연소불안정 관련 연구그룹들의 최신 연구동향이 소개되었다. 현재까지도 연소불안정현상은 기관의 성능, 내구성, 작동 등에 영향을 미치는 중요한 문제 중의 하나이다. 덧붙여 가스터빈기관에서 연소불안정 현상은 공기 또는 연료의 섭동과 열방출율 사이의 상호 중첩된 결과로 알려져 있으며, 이는 NOx 감소 전략과도 관련이 있다. 따라서 연소불안정 연구에 대한 현황을 이해하기 위하여 가스터빈에서의 연소불안정 현상에 대하여 정리하여 보았다.

Keywords

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