Three-dimensional numerical and experimental investigation on supersonic secondary combustion

Supersonic secondary combustion of fuel-rich gases enhanced by air injection was experimentally investigated. Numerical solutions of the finite-volume discretized full Navier-Stokes equations, coupled with chemical reaction species continuum equations, were obtained for the experimental flow fields. By examining the injection boundary, streamwise vortex etc., the mixing and combustion efficiencies of two mixers were compared, and the results show that the performance of the barrel mixer is predominated over that of the cone mixer.