Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Combustion Instability Prediction Using 1D Thermoacoustic Model in a Gas Turbine Combustor

가스터빈 연소기에서 1D 열음향 모델을 이용한 연소불안정 예측

  • 김진아 (강릉원주대학교 기계자동차공학부) ;
  • 김대식 (강릉원주대학교 기계자동차공학부)
  • Received : 2015.12.09
  • Accepted : 2015.12.23
  • Published : 2015.12.31
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Abstract

The objective of the current study is to develop an 1D thermoacoustic model for predicting basic characteristics of combustion instability and to investigate effects of key parameters on the instabilities such as effects of flame geometry and acoustic boundary conditions. Another focus of the paper is placed on limit cycle prediction. In order to improve the model accuracy, the 1D model was modified considering the actual flame location and flame length (i.e. distribution of time delay). As a result, it is found that the reflection coefficients have a great effect on the growth rate of the instabilities. In addition, instability characteristics are shown to be strongly dependent upon the fuel compositions.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. D. Durox, T. Schuller, N. Noiray, A.L. Birbaud, and S. Candel, "Rayleigh criterion and acoustic energy balance in unconfined self-sustained oscillating flames", Combustion and Flame, Vol. 156, Iss. 1, 2009, pp. 106-119. https://doi.org/10.1016/j.combustflame.2008.07.016
  2. T. Lieuwen and K. McManus, "Introduction: Combustion dynamics in lean-premixed prevaporized(LPP) gas turbines", Journal of Propulsion and Power, Vol. 19, No. 5, 2003, pp. 721. https://doi.org/10.2514/2.6171
  3. J. Kim and D. Kim, "Effects of fuel composition on flame transfer function in lean premixed combustor", Journal of ILASS-Korea, Vol. 20, No. 3, 2015, pp. 135-140. https://doi.org/10.15435/JILASSKR.2015.20.3.135
  4. D. Kim, "Linear stability analysis in a gas turbine combustor using thermoacoustic models", Journal of the Korea Society of Combustion, Vol. 17, 2012, pp. 17-23.
  5. D. Kim and K. Kim, "Improved thermoacoustic model considering heat release distribution", Trans. Korean Soc. Mech. Eng. B, Vol. 38, No. 6, 2014, pp. 443-449. https://doi.org/10.3795/KSME-B.2014.38.6.443
  6. D. Kim and K. Kim, "Thermoacoustic analysis model for combustion instability prediction-Part 2 : Nonlinear instability analysis", Journal of the Korean Society of Propulsion Engineers, Vol. 16, No. 9, 2012, pp. 41-47.
  7. J. Lim, D. Kim, K. Kim and D. Cha, "Effect of acoustic boundary conditions on combustion instabilities in a gas turbine combustor", Journal of the Korean Society of Propulsion Engineers, Vol. 19, No. 4, 2015, pp. 15-23. https://doi.org/10.6108/KSPE.2015.19.4.015
  8. K. Kim, J. Lee, H. Lee, B. Quay and D. Santavicca, "Characterization of forced flame response of swirlstabilized turbulent lean premixed flames in a gas turbined combustor", Journal of Engineering of Gas Turbine and Power, Vol. 132, Iss. 4, 2010, pp. 1-8.
  9. K. Kim, J. Lee, B. Quay and D. Santavicca, "Spatially distributed flame transfer functions for predicting combustion dynamics in lean premixed gas turbine combustors", Combustion and Flame, Vol. 157, No. 9, 2010, pp. 1718-1730. https://doi.org/10.1016/j.combustflame.2010.04.016
  10. W. Krebs, P. Flohr, B. Prade and S. Hoffmann, "Thermoacoustic stability chart for high-intensity gas turbine combustion system", Combustion Science and Technology, Vol. 174, No. 7, 2002, pp. 99-128. https://doi.org/10.1080/713713051

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