The effect of localized pulse-periodic energy supply on supersonic mixing in channels

Results of numerical simulations of supersonic flows in flat channels with narrowing and expanding input sections confirm the possibility of intensification of the mixing of a low-density supersonic gas jet with surrounding co-current flow by means of a localized pulse-periodic energy supply. The influence of the positions of the jet and energy-supply source on the formation of large-scale vortex structures favoring the intensification of mixing is demonstrated.