Abstract
A method is described that constructs three-dimensional unstructured tetrahedral meshes using the Delaunay triangulation criterion. The approach includes an automatic point creation technique and ensures that, given an initial surface triangulation which bounds a domain, a valid boundary conforming assembly of tetrahedra is produced. The efficiency of the proposed procedure reduces the computer time for the generation of realistic unstructured tetrahedral grids to the order of minutes on workstations of modest computational capabilities. The grids generated are used with two finite element algorithms to simulate inviscid transonic compressible flows. Flow solutions for aerospace configurations are presented and computed results compared with experimental data.
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