Navier-Stokes solutions for laminar incompressible boundary layers with strong viscous-inviscid interaction

In this method, the usually prescribed pressure distribution is replaced by an interactive boundary condition which models the behavior of the outer flow past a curved wall with boundary layer. This approach enables simultaneous solution of boundary layer and outer flow, avoiding the difficulties associated with either direct or inverse methods. A fast convergence is obtained without encountering numerical instabilities in separation points. The interactive boundary condition is consistent with the description by asymptotic triple-deck equations of the flow near a singular point. The method is capable of solving both boundary layer equations and the complete Navier-Stokes equations. Results are presented for trailing-edge flows of both a flat plate and a body with finite trailing-edge angle.