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http://dx.doi.org/10.15435/JILASSKR.2015.20.4.241

Combustion Instability Prediction Using 1D Thermoacoustic Model in a Gas Turbine Combustor  

Kim, Jin Ah (강릉원주대학교 기계자동차공학부)
Kim, Daesik (강릉원주대학교 기계자동차공학부)
Publication Information
Journal of ILASS-Korea / v.20, no.4, 2015 , pp. 241-246 More about this Journal
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
Combustion Instability; Thermoacoustic Model; Reflection Coefficient; Fuel Composition;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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