Effect of Mach Number on Supersonic Mixing by "Hyper-Mixer Injector"

For supersonic mixing enhancement, large scale streamwise vortices seem to be the most advantageous. In SCRAM jet (supersonic combustion ramjet) engine, the device which introduces both the large scale streamwise vortices and fuel into supersonic flow needs to be installed on the chamber wall to alleviate the heavy aerodynamic and heat load. So, it must have the high ability to mix the fluids in near-wall and free stream, efficiently. In the present study, we made effort to clarify the mixing performance of two kinds of Hyper-mixer type wall-mounted ramp injectors, and we examined Mach number effect on supersonic mixing flow field which is generated by Hyper-Mixer type ramp injectors.