Combustion Instability Modeling in a Reverse-Flow Gas Turbine Combustor using a Network Model

Juchan Son; Daesik Kim

doi:10.15231/jksc.2021.26.4.020

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2021 Vol.26, Issue 4 Preview Page Next Page

Research Article

Combustion Instability Modeling in a Reverse-Flow Gas Turbine Combustor using a Network Model 네트워크 모델을 사용한 역류형 가스터빈 연소기에서의 연소불안정 예측

31 December 2021. pp. 20-28

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Abstract

In this paper, combustion instability in a reverse-flow gas turbine combustor was analyzed using a 1D network model. Two different approaches of flame transfer functions were considered; one is a classical n-τ model and the other is a modified model considering the time delay distribution. As a result of constructing a network model by rearranging acoustic elements in the flow direction, the analysis results of frequency and mode distribution similar to the measurement were obtained. In addition, the feedback instability prediction results considering the time delay distribution have shown modeling results closer to the experiment compared to the classical n-τ model.

Keywords

1D network model

Acoustic mode

Feedback instability analysis

Flame transfer function

Resonant frequency

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Information

Publisher :The Korean Society Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of The Korean Society Combustion
Journal Title(Ko) :한국연소학회지
Volume : 26
No :4
Pages :20-28
Received Date : 2021-10-15
Revised Date : 2021-11-08
Accepted Date : 2021-11-17
DOI :https://doi.org/10.15231/jksc.2021.26.4.020

Journal of The Korean Society Combustion ISSN:1226-0959(Print) 2466-2089(Online) 한국연소학회지

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