자발광 계측 결과와 EDMD 기법을 적용한 가스터빈 연소기의 연소불안정성 분석
Chemi-luminescence Measurement and Exact Dynamic Mode Decomposition for Combustion-Instability Analysis in a Gas Turbine Combustor
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
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.
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.
참고문헌 (8)
- Y. Koç, "Analysing the performance, fuel cost and emission parameters of the 50 MW simple and recuperative gas turbine cycles using natural gas and hydrogen as fuel", Int. J. Hydrogen Energy, 45, pp.22138~22147 (2020)
- N. S. Rodrigues, "NOX reduction in an axially staged gas turbine model combustor through increase in the combustor exit Mach number", Combust. Flame, 212, pp.282~294 (2020)
- S. Joo, "Thermoacoustic instability and flame transfer function in a lean direct injection model gas turbine combustor", Aerosol Sci. Technol, 116, pp.106872~ (2021)
- C. Ruan, "Experimental study on impacts of fuel type on thermo-acoustic instability in a gas turbine model combustor", Sci. China Technol. Sciences, 64, pp.1345~1358 (2021)
- R. Rajasegar, "Comprehensive combustion stability analysis using dynamic mode decomposition", Energy Fuels, 32, pp.9990~9996 (2018)
- Y. Wang, "Combustion instability analysis of a model gas turbine by application of dynamic mode decomposition", J. Korean Soc. Combust, 24, pp.51~56 (2019)
- P. J. Schmid, "Dynamic mode decomposition of numerical and experimental data", J. Fluid Mech, 656, pp.5~28 (2010)
- S. Bagheri, "Koopman-mode decomposition of the cylinder wake", J. Fluid Mech, 726, pp.596~623 (2013)