자발광 계측 결과와 EDMD 기법을 적용한 가스터빈 연소기의 연소불안정성 분석

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 t...

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Bibliographic Details
Published in한국연소학회지 Vol. 29; no. 3; pp. 53 - 61
Main Authors 성지환(Ji Hwan Seong), 왕위엔강(Yuangang Wang), 박순빈(Soon Been Park), 황정재(Jeongjae Hwang), 이원준(Won June Lee), 손채훈(Chae Hoon Sohn)
Format Journal Article
LanguageKorean
Published 한국연소학회 01.09.2024
Subjects
기계공학
Exact dynamic mode decomposition
Combustion instability
Mode shape
Growth rate
Fast Fourier transform
Online AccessGet full text
ISSN1226-0959
2466-2089
DOI10.15231/jksc.2024.29.3.053

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Summary: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. KCI Citation Count: 0
ISSN:1226-0959
2466-2089
DOI:10.15231/jksc.2024.29.3.053