Computation of internal incompressible separated flows using a space-marching technique

A space-marching method which describes mildly elliptic flows and includes a Poisson equation for the pressure distribution is presented for modeling incompressible separated flows. Momentum and continuity equations are treated as a coupled system to obtain a divergence-free velocity field. Once the Poisson equation is solved, it remains unchanged through subsequent iterations. Comparisons of the model predictions with data gathered from an unseparated turbulent flow in a cascade and a laminar separated flow in a suddenly expanding channel yield a favorable match. Although the model also successfully describes the flow past a cascade of cambered, double circular arc airfoils, applications are limited to conditions of only mild viscid/inviscid interaction.