A Robust Multigrid Algorithm for the Simulation of a Yawed Flat Plate |
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Authors: | Ruben S Montero Ignacio M Llorente Manuel D Salas |
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Affiliation: | (1) Departamento de Arquitectura de Computadores y Automática, Universidad Complutense, 28040 Madrid, Spain;(2) ICASE, Mail Stop 132C, NASA Langley Research Center, Hampton, Virginia, 23681-2199 |
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Abstract: | This paper presents a full multigrid solver for the simulation of a flow over a yawed flat plate. The two problems associated with this simulation; boundary layers and entering flows with non-aligned characteristics, have been successfully overcome through the combination of a plane-implicit solver and semicoarsening. In fact, this multigrid algorithm exhibits a textbook multigrid convergence rate, i.e., the solution of the discrete system of equations is obtained in a fixed amount of computational work, independently of the grid size, grid stretching factor and non-alignment parameter. Also, a parallel variant of the smoother based on a four-color ordering of planes is investigated. |
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Keywords: | plane implicit smoothers semicoarsening robust multigrid flat plate boundary layer computational fluid dynamics |
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