Combustion Stability Analysis using Feedback Transfer Function

피드백 전달함수를 이용한 연소 안정성 해석

  • Kim, Jina (School of Mechanical and Automotive Engineering, Gangneung-Wonju National University) ;
  • Yoon, Myunggon (School of Mechanical and Automotive Engineering, Gangneung-Wonju National University) ;
  • Kim, Daesik (School of Mechanical and Automotive Engineering, Gangneung-Wonju National University)
  • 김진아 (강릉원주대학교 기계자동차공학부) ;
  • 윤명곤 (강릉원주대학교 기계자동차공학부) ;
  • 김대식 (강릉원주대학교 기계자동차공학부)
  • Received : 2016.06.05
  • Accepted : 2016.07.14
  • Published : 2016.09.30


In this paper we propose a new approach for an analysis and a prediction of combustion instability of lean premixed gas turbines. Our approach is based on the Nyquist stability criterion in control theory and a transfer function representation of a one-dimensional (1D) thermoacoustic system. A key advantage of the proposed approach is that one can systematically characterize the effects of various parameters of a combustor system on combustion instability. Our analysis method was applied to a real combustion system and the analysis results were consistent with experimental data.



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