UNSTRUCTURED ADAPTIVE MOVING MESH SOLUTION OF UNSTEADY SHEAR FLOWS AND FREE-SURFACE FLOWS

A method for performing anisotropic unstructured mesh adaptation is discussed that is well suited for computational fluid dynamics on parallel distributed memory computers. This algorithm which involves mesh motion, rather than refinement and coarsening, is fast, parallel, and fully conservative. The approach is effective at accurately capturing free-surface flows, boundary layers, and unsteady shear layers. Examples of some of applications are presented. BACKGROUND Mesh adaptation allows high quality CFD solutions to be computed by placing the mesh where it is most needed. Fluid solutions tend to have very thin but physically critical layers (shear layers and boundary layers) that must be adequately resolved in order to accurately predict the flow behaviour. I