ADAPTIVE MESH REFINEMENT METHODS FOR THREE-DIMENSIONAL INVISCID FLOW PROBLEMS

SUMMARY

The local grid refinement technique is incorporated into a finite volume program that solves the three-dimensional compressible Euler equations. The underlying idea is to improve the solution accuracy in domains of dominating physical flow features, thus avoiding a global fine mesh to resolve most of the smooth flow. An unstructured data system is introduced to manage point enrichment on multiple refinement levels for structured meshes of hexahedral cells. Grid adaption is utilized to cluster points automatically in domains of interest. The multi-block formulation permits the application of the refinement method to various external flow configurations.