Combustion flow in different advanced vortex combustors with/without vortex generator

Numerical calculation has been performed to analyze the combustion flow in different advanced vortex combustors. For the rear blunt body, when slot size is 2 mm and half open angle theta is 50 degrees, advanced vortex combustor has the best combustion flow characteristics. The performance of advanced vortex combustor with vortex generator principle is obviously better than that without vortex generator. The effects of injection parameters on the performance in AVC were studied. With the increase of anteversion angle alpha, the mixing rate increases, and the degree of thermal energy conversion to the kinetic energy of the combustor outlet increases. With the increase of sloping angle beta, the high temperature region in the cavity becomes wider, and the distribution is more uniform. When alpha = 60 degrees and beta = 60 degrees, the combustion chamber can achieve stable combustion with higher temperature and lower pressure drop in the lean combustion conditions. (C) 2019 Elsevier Masson SAS. All rights reserved.