Multigrid solution of the Euler equations on unstructured and adaptive meshes
Abstract
A multigrid algorithm for application to a sequence of completely unstructured and unrelated meshes is discussed, and solutions for the supercritical flow over a twoelement airfoil system are presented. A Delaunay algorithm (Weatherill, 1985), in which the distribution of mesh points is either determined by conformal mapping techniques or by adaptive refinement of the previous coarser mesh, is used to generate the meshes. Although the finest mesh used in the adaptive refinement sequence contains about 1/4 as many mesh points as that used in the global refinement sequence, the calculated force coefficients for both solutions are found to compare closely.
 Publication:

University of Colorado and USAF
 Pub Date:
 April 1987
 Bibcode:
 1987mume.confR....M
 Keywords:

 Adaptive Filters;
 Computational Grids;
 Conformal Mapping;
 Euler Equations Of Motion;
 Transonic Flow;
 Airfoils;
 Grid Generation (Mathematics);
 Interpolation;
 Supercritical Flow;
 Triangulation;
 Fluid Mechanics and Heat Transfer