The interaction between a swept shock and the secondary flows present in the corners of a supersonic channel flow is experimentally investigated. Such an interaction presents an additional type of unit problem different than the isolated fin-type swept shock/boundary layer interaction. Stereo PIV measurements were conducted perpendicular to the principal flow direction in order to capture the secondary flows characteristic of such an interaction. Various parameters, such as vorticity, probability of flow separation, separation strength and friction coefficient are evaluated. The region of strongest separation in the flowfield generated by a coupled 3D SBLI was found to be at the location of the interaction between the vortex induced by the swept shock and the corner vortex developed in the corner of the channel. In this study, we attempt at explaining the mechanisms responsible for the observed separation.
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