한국연소학회:학술대회논문집
- 한국연소학회 2015년도 제51회 KOSCO SYMPOSIUM 초록집
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- Pages.113-114
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- 2015
1D 및 3D 열음향 연소불안정 모델링
1D and 3D Thermoacoustic Combustion Instability Modeling
초록
In this study, 1D and 3D thermoacoustic analysis model were developed in order to predict fundamental characteristics of combustion instability in a gas turbine lean premixed combustor. The 1D network model can be used to analyze frequency and growth rate of combustor instability by simply dividing whole system into a couple of acoustic sub-elements, while the 3D Helmholtz solver model can predict directly acoustic modes as well as basic properties of combustion instability. Prediction results of both 1D and 3D models generally showed a good agreement with the measurements, even if there was a slight overestimation for instability range.