This paper reviews projects carried out in the Imperial College Gun Tunnel and presents experimental results for shock-wave/boundary-layer interactions, generally severe enough to cause flow separation. Our objective is to target test cases that can be regarded as building blocks for complete vehicles and to produce benchmark data that may be suitable for code validation and to improve knowledge of the flow physics. The first results review our studies on two-dimensional axisymmetric shock wave interactions with a turbulent boundary layer. This is followed by a managed three-dimensional distortion of these flows to produce a range of separations that could be regarded as ranging from weakly three-dimensional to strongly three-dimensional. Finally a study is made of the interaction between turbulent spots convecting past an, initially laminar, axisymmetric separated flow.
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