A fast method to solve incompressible boundary layer interaction problems

The mutual influence of pressure and displacement thickness is recognized by simultaneously updating both these quantities as the boundary layer is marched. A survey of hierarchical and nonhierarchical solutions is presented. The iteration technique was implemented in a full boundary layer approach and a triple-deck formulation. Results were calculated for the flat plate trailing edge interaction problem, for backward and forward facing steps and for the Carter/Wornom trough. In all cases fast convergence is obtained. Separation, reattachment, dividing streamline and skin friction are found to be virtually identical.