A study of turbulent flow computations in an angled duct with a step

This paper presents a method for effective computation of turbulent flows in an angled duct which has a step at the angled section by using a grid generation technique. An effect of flow curvature was analyzed on the separating and reattaching flows. The computations are based on the Reynolds averaged transport equations which are transformed for use on a generalized curvilinear coordinate system. A special care was taken on the treatment of pressure corrections. Wall function boundary conditions for k-epsilon model were developed.