Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Combustion Instability Modeling in a Partially-premixed Gas Turbine Combustor using Finite Element Method

유한요소법을 이용한 부분 예혼합 가스터빈 연소기에서의 연소불안정 모델링

  • 장세구 (강릉원주대학교 기계자동차공학부) ;
  • 김대식 (강릉원주대학교 기계자동차공학부) ;
  • 주성필 (서울대학교 기계항공공학부) ;
  • 윤영빈 (서울대학교 기계항공공학부)
  • Received : 2018.01.16
  • Accepted : 2018.02.19
  • Published : 2018.03.31
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Abstract

The current study has developed an in-house 3D FEM code in order to model thermoacoustic problems in a gas turbine combustion system and compared calculation results of main instability characteristics with measured ones from a lab-scale partially-premixed combustor. From the comparison of calculation results with the measured data, the current model could successfully capture the harmonic longitudinal instability frequencies and their spatial distributions of the acoustic field as well as the growth rate of self-excited modes.

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References

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