Abstract
The interaction between laminar boundary layer reattachment and a rectangular cavity in a hypersonic compression ramp was investigated numerically and experimentally. It was found from the present results that the separation bubble becomes larger than that of the baseline flat ramp case. This is caused by higher adverse pressure gradient due to the cavity end wall. In the flowfield a high temperature separated shear layer collides with the endwall of cavity, where a hot stagnation point is formed. The endwall heat flux becomes about 10 times as large as the maximum heat flux in the baseline flat ramp case.
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