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An iterative method for the creation of structured hexahedral meshes over complex orography
Authors:Alan Ward  Josep Jorba
Affiliation:Distributed, Parallel and Collaborative Systems (DPCS) Research Group, Universitat Oberta de Catalunya (UOC), Rambla del Poblenou 156, 08018 Barcelona, Spain
Abstract:In this paper we propose a technique for measuring the quality of hexahedral Cartesian meshes used to model meso-scale atmospheric circulation in 3D. It is used to verify the progress of a novel method for satisfying the Delaunay criterion for structured hexahedral meshes over complex orography with high gradients and wide gradient variability. Based on a simile with potential energy, the iterative method of mesh smoothing is shown to improve mesh quality with logarithmic convergence. The method is evaluated in a practical application in a specific geographic location.
Keywords:Delaunay criterion   Structured mesh   Mesh quality   Complex orography   Mesh smoothing
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