The Effects of Turbine Guide Vanes on the Ignition Limit and Light-Round Process of a Triple-Dome Combustor

Ziyan Li, Xiaoyan Zhang, Kaixing Wang, Fuqiang Liu (), Changlong Ruan, Jinhu Yang, Yong Mu, Cunxi Liu and Gang Xu
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Ziyan Li: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Xiaoyan Zhang: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Kaixing Wang: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Fuqiang Liu: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Changlong Ruan: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Jinhu Yang: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Yong Mu: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Cunxi Liu: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
Gang Xu: Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China

Energies, 2024, vol. 17, issue 18, 1-10

Abstract: This experimental study investigated the influence of different turbine guide vane parameters on the ignition limit and light-round processes in a triple-dome combustor. It was found that for the triple-dome combustor, the minimum fuel/air ratios at the ignition limit all show a trend of initial decrease followed by subsequent increase with the growth of incoming air mass flow rate. The ignition fuel/air ratio decreases with the increase in turbine blockage ratio, and the optimal scheme is achieved with a blockage ratio of 0.8. Under the condition where the incoming air mass flow rate is 0.089 kg/s, the light-round time decreases with the increase in fuel/air ratio, and the light-round time of the combustor without guide vanes is shorter than that of the other schemes. With the increase in incoming air mass flow rate, the light-round time of the schemes with guide vanes is shortened. Under the same incoming air mass flow rate and fuel/air ratio, the increase in the blockage ratio will lead to an increase in the light-round time of the triple-dome combustor.

Keywords: flame propagation; high-speed imaging; blockage ratio; ignition limit; light-round time (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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