Mixed element type unstructured grid generation for viscous flow applications

David Marcum, J. Gaither
1999 14th Computational Fluid Dynamics Conference   unpublished
A procedure is presented for efficient generation of high--quality unstructured grids suitable for CFD simulation of high Reynolds number viscous flow fields. Layers of anisotropie elements are generated by advancing along prescribed normals from solid boundaries. The points are generated such that either pentahedral or tetrahedral elements with an implied connectivity can be be directly recovered. As points are generated they are temporarily attached to a volume triangulation of the boundary
more » ... ints. This triangulation allows efficient local search algorithms to be used when checking merging layers. The existing advancing-front/local-reconnection procedure is used to generate isotropic elements outside of the anisotropic region. Results are presented for a variety of applications. The results demonstrate that high-quality anisotropic unstructured grids can be efficiently and consistently generated for complex configurations.
doi:10.2514/6.1999-3252 fatcat:h44zo7mc7jbl5hayquuwbharh4