Shock-Induced Separation
The interaction between a shock and a boundary layer depends on whether the boundary
layer is laminar or turbulent. In the former case the pressure rise through the shock
will propagate farther upstream and downstream (the shock will look weaker).
The
turbulent boundary layer, though, carries more momentum and can better overcome the
strong adverse pressure gradients. The figure below is a sketch of phenomena taking
place when a shock is interacting with a laminar boundary layer.
Figure 3: layer interaction