Hypervelocity shock-boundary layer interactions with varying freestream composition (INVITED)

Abstract eng:
Shock-boundary layer interactions in hypervelocity flows have been demonstrated to be sensitive to nonequilibrium, with the macroscopic features of the flow responding to changes in the molecular processes. Experiments are carried out examining interactions over double-wedge and double-cone geometries while varying the freestream oxygen content from nitrogen to air. Time-resolved high speed schlieren and chemiluminescence imaging, together with vibrational temperature measurements, quantify the response of flow features as a function of the thermochemical state.

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