Unstructured Grid Adaption for Non-Convex Domains

Numerical Grid Generation in Computational Fluid Mechanics `88, Pineridge Press, pp.599-609, 1988

MESHING
RESEARCH
CORNER

in proceedings:
Numerical Grid Generation in Computational Fluid Mechanics '88, Edited by S. Sengupta, J. Hauser, P.R. Eiseman, J. F. Thompson.
Copyright 1988 Pineridge Press
ISBN 0-906674-68-9

Department of Aerospace Engineering
The University of Texas at Arlington

Abstract
Unstructured grid adaption for non-convex domains is described. The method provides a technique for either smoothing an unstructured grid, or adapting the grid to a given weight function. In contrast to other methods, the proposed method produces valid grids for non-convex domains. Examples are shown for smoothing grids on a domain with a reentrant corner, adapting a grid to the solution of a model problem set in the unit circle, and adaptive grid generation for upwind calculation of a supersonic inlet flow-field. It is shown that increased numerical accuracy can be achieved on unstructured grids by adapting to salient solution features.