Abstract.
The Winslow equations from structured elliptic grid generation are adapted to smoothing of two-dimensional unstructured meshes using a finite difference approach. We use a local mapping from a uniform N-valent logical mesh to a local physical subdomain. Taylor Series expansions are then applied to compute the derivatives which appear in the Winslow equations. The resulting algorithm for Winslow smoothing on unstructured triangular and quadrilateral meshes gives generally superior qualilty than traditional Laplacian smoothing, while retaining the resistance to mesh folding on structured quadrilateral meshes.
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Knupp, P. Winslow Smoothing on Two-Dimensional Unstructured Meshes. Engineering with Computers 15, 263–268 (1999). https://doi.org/10.1007/s003660050021
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DOI: https://doi.org/10.1007/s003660050021