Chemi-luminescence Measurement and Exact Dynamic Mode Decomposition for Combustion-Instability Analysis in a Gas Turbine Combustor

Ji Hwan Seong; Yuangang Wang; Soon Been Park; Jeongjae Hwang; Won June Lee; Chae Hoon Sohn

doi:10.15231/jksc.2024.29.3.053

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2024 Vol.29, Issue 3 Preview Page

Research Article

Chemi-luminescence Measurement and Exact Dynamic Mode Decomposition for Combustion-Instability Analysis in a Gas Turbine Combustor 자발광 계측 결과와 EDMD 기법을 적용한 가스터빈 연소기의 연소불안정성 분석

30 September 2024. pp. 53-61

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Abstract

To analyze combustion instability in the combustor of a gas turbine, the results of chemi-luminescence measurement are applied for the exact dynamic mode decomposition (EDMD) as hydrogen blending ratio, pilot split ratio, and operating pressure. The resonant frequencies obtained using fast Fourier transform (FFT) and EDMD are compared to confirm the growth rate and mode shape. The effect of hydrogen blending ratio, pilot split ratio, and pressure on the combustion instability was confirmed by comparing these results and used for analysis of combustion instability.

Keywords

Exact dynamic mode decomposition

Fast Fourier transform

Growth rate

Mode shape

Combustion instability

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Information

Publisher :The Korean Society of Combustion
Publisher(Ko) :한국연소학회
Journal Title :Journal of the Korean Society of Combustion
Journal Title(Ko) :한국연소학회지
Volume : 29
No :3
Pages :53-61
Received Date : 2024-07-19
Revised Date : 2024-09-13
Accepted Date : 2024-09-13
DOI :https://doi.org/10.15231/jksc.2024.29.3.053

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

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