Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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Combustion Instability Analysis of Partially Premixed Model Gas Turbine Combustor with 1D Lumped Method

1D Lumped Method를 이용한 모형 부분 예혼합 가스터빈 연소기의 연소불안정 해석

  • Kim, Jeongjin (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Yoon, Jisu (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Joo, Seongpil (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, Seongheon (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Sohn, Chae Hoon (Department of Mechanical Engineering, Sejong University) ;
  • Yoon, Youngbin (Department of Mechanical and Aerospace Engineering, Seoul National University)
  • 김정진 (서울대학교 기계항공공학부) ;
  • 윤지수 (서울대학교 기계항공공학부) ;
  • 주성필 (서울대학교 기계항공공학부) ;
  • 김성헌 (서울대학교 기계항공공학부) ;
  • 손채훈 (세종대학교 기계공학과) ;
  • 윤영빈 (서울대학교 기계항공공학부)
  • Received : 2017.01.06
  • Accepted : 2017.02.27
  • Published : 2017.03.30
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Abstract

Combustion instability analysis of partially premixed model gas turbine combustor was conducted with 1D lumped method. Flame Transfer Function(FTF) was obtained with variation of fuel composition by Photo Multiplier Tube(PMT) and Hot Wire Anemometry(HWA). Decreasing instability frequency was observed when combustor length increased and multi-mode instability was confirmed. Instability frequency mode was changed while $H_2$ composition rate was increased and had agreement with experimental value. This work confirms that prediction of longitudinal combustion instability mode of partially premixed combustor is possible using 1D lumped method.

Keywords

References

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