A Parallel CFD Solver Using the Discontinuous Galerkin Approach

Christian Lübon (), Manuel Keßler and Siegfried Wagner
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Christian Lübon: Universität Stuttgart, Institut für Aerodynamik und Gasdynamik
Manuel Keßler: Universität Stuttgart, Institut für Aerodynamik und Gasdynamik
Siegfried Wagner: Universität Stuttgart, Institut für Aerodynamik und Gasdynamik

A chapter in High Performance Computing in Science and Engineering, Garching/Munich 2009, 2010, pp 197-205 from Springer

Abstract: Abstract In the present paper a high-order Discontinuous Galerkin method is presented for the numerical simulation of the turbulent flow around complex geometries using unstructured grids. In order to close the Reynolds-averaged Navier-Stokes (RANS) system we use the Spalart-Allmaras turbulence model, the Wilcox K-ω turbulence model or a Detached Eddy Simulation technique. The paper includes some details of the code implementation. The excellent parallelisation characteristics of the scheme are demonstrated, achieved by hiding communication latency behind computation. Some results, like flows over a flat plate and around a sphere, which could not be predicted with an Unsteady Reynolds averaged Navier-Stokes calculation, are calculated with high accuracy and compared with theory and experiments.

Keywords: Turbulence Model; Skin Friction; Discontinuous Galerkin; Unstructured Grid; Discontinuous Galerkin Method (search for similar items in EconPapers)
Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-642-13872-0_17

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DOI: 10.1007/978-3-642-13872-0_17

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