Transverse jet in supersonic crossflows

The mixing and combustion process plays an important role in the realization of the scramjet engine, and the transverse injection from a wall orifice is widely employed for the simplest and most promising of its configurations. In the current survey, the research progress on the transverse jet in supersonic crossflows has been summarized systematically from four aspects, namely single injection, multiport injection, interaction between jet and vortex generator, and interaction between jet and shock wave, and the basic principle of the transverse injection has been provided as well. At last, some promising recommendations have been proposed, namely the refined vortex structure capture, the mixing and combustion process in the novel injector and multiport flow fields, especially with the incident shock wave interaction, and the combinatorial operating and optimization process between the fuel injection and the vortex generator.