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

• Published in: Energies (Basel) 2024-09, Vol.17 (18), p.4636
• Main Authors: Li, Ziyan, Zhang, Xiaoyan, Wang, Kaixing, Liu, Fuqiang, Ruan, Changlong, Yang, Jinhu, Mu, Yong, Liu, Cunxi, Xu, Gang
• Format: Article
• Language: English
• Subjects: Aviation; blockage ratio; Boundary conditions; Cameras; Combustion; Combustion chambers; Design techniques; Energy consumption; flame propagation; high-speed imaging; ignition limit; Light; light-round time; Nozzles; Propagation; Reynolds number; Simulation; Turbines; Turbulence models; Velocity
• ISSN: 1996-1073; 1996-1073
• DOI: 10.3390/en17184636

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.