Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Time Lag Analysis Using Phase of Flame Transfer Function

화염전달함수의 위상차를 이용한 시간지연 분석

  • 표영민 (강릉원주대학교 기계자동차공학부) ;
  • 김지환 (강릉원주대학교 기계자동차공학부) ;
  • 김대식 (강릉원주대학교 기계자동차공학부)
  • Received : 2016.06.03
  • Accepted : 2016.06.09
  • Published : 2016.06.30
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Abstract

Main purpose of the current paper is to show results of time lag analysis using phase information of flame transfer function in order to predict combustion instabilities in a gas turbine combustor. The flame transfer function (FTF) is modeled using a commercial Computational Fluid Dynamics (CFD) code (Fluent). Comparisons of the modeled flame shapes with the measured ones were made using the optimized heat transfer conditions and combustion models. The FTF modeling results show a quite good agreement with the measurement data in predicting the phase delay (i.e. time lag). Time lag analysis results using the phase of FTF shows better combustion instability prediction accuracy than using time lag calculated from the steady state flame length.

Keywords

References

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  1. Limit Cycle Amplitude Prediction Using Results of Flame Describing Function Modeling vol.20, pp.6, 2016, https://doi.org/10.6108/KSPE.2016.20.6.046