3-Dnumerical simulation for supersonic hydrogen combustion was performed by solving the compressible Navier-Stokes equation and composition equations using implicit finite volume methods.Meanwhile

the effect of hydrogen injection pressure on combustion was analyzed and studied.The results show that

owing to the heat release from combustion and the influences of hydrogen's injection pressure

the flow field changes greatly

leading to enhanced streamwise vortex and stronger interaction between waves in the combustor and hydrogen flow

and also facilitating the mixing of hydrogen and air for improved hydrogen combustion performance.