Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Flame Transfer Function Modeling in a Gas Turbine Partially-premixed Combustor with Equivalence Ratio Modulation

가스터빈 부분 예혼합 연소기에서 당량비 섭동에 대한 화염전달함수 모델링

  • 김지환 (강릉원주대학교 기계자동차공학부) ;
  • 김대식 (강릉원주대학교 기계자동차공학부)
  • Received : 2017.01.23
  • Accepted : 2017.03.08
  • Published : 2017.06.30
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Abstract

This study has investigated the relationship between heat release fluctuations and the flow perturbations in a partially premixed gas turbine combustor using a commercial CFD code. Special focus of the current work is placed on the effect of equivalence ratio on the flame dynamics in a partially-premixed system. As the first step for this combustion dynamics study in the non-perfectly premixed combustor, flame behaviors are modeled and then compared with measured results under both steady and unsteady conditions. The calculated results of the flame transfer function with equivalence ratio fluctuation are found to well capture the main qualitative characteristics of the combustion dynamics for the partially-premixed flames.

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References

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