설비공학논문집 (Korean Journal of Air-Conditioning and Refrigeration Engineering)

  • 제22권3호
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  • Pages.156-164
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  • 2010
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  • 1229-6422(pISSN)
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  • 2465-7611(eISSN)
대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

폐음향 경계조건을 갖는 가스터빈 연소기의 연소불안정 해석

A Combustion Instability Analysis of a Gas Turbine Combustor Having Closed Acoustic Boundaries at Both Ends

  • 차동진 (한밭대학교 건축설비공학과) ;
  • 신동명 (한밭대학교 산업대학원)
  • Cha, Dong-Jin (Dept. of Building Services Engineering, Hanbat National University (HNU)) ;
  • Shin, Dong-Myung (Graduate School of Industry, Dept. of Building Services Engineering, HNU)
  • 발행 : 2010.03.10
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초록

Combustion instability is a major issue in design of gas turbine combustors for efficient operation with low emissions. Combustion instability is induced by the interaction of the unsteady heat release of the combustion process and the change in the acoustic pressure in the combustion chamber. In an effort to develop a technique to predict self-excited combustion instability of gas turbine combustors, a new stability analysis method based on the transfer matrix method is developed. The method views the combustion system as a one-dimensional acoustic system with a side branch and describes the heat source as the input to the system. This approach makes it possible to use not only the advantages of the transfer matrix method but also well established classic control theories. The approach is applied to a gas turbine combustion system, which shows the validity and effectiveness of the approach.

키워드

참고문헌

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