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Parallel discontinuous Galerkin unstructured mesh solvers for the calculation of 3D heterogeneous wave propagation problems

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Résumé

We discuss the parallel performances of discontinuous Galerkin solvers designed on unstructured tetrahedral meshes for the calculation of three-dimensional heterogeneous electromagnetic and aeroacoustic wave propagation problems. An explicit leap-frog time-scheme along with centered numerical fluxes are used in the proposed discontinuous Galerkin time-domain (DGTD) methods. The schemes introduced are genuinely non-dissipative, in order to achieve a discrete equivalent of the energy conservation. Parallelization of these schemes is based on a standard strategy that combines mesh partitioning and a message passing programming model. The resulting parallel solvers are applied and evaluated on several large-scale, homogeneous and heterogeneous, wave propagation problems.

Dates et versions

hal-01858316 , version 1 (20-08-2018)

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Citer

Stephane Lanteri, Marc Bernacki, Loula Fatima Fezoui, Serge Piperno. Parallel discontinuous Galerkin unstructured mesh solvers for the calculation of 3D heterogeneous wave propagation problems. Distributed Computing and its Applications in Business, Engineering and Sciences (DCABES), Aug 2005, Greenwich, United Kingdom. ⟨10.1016/j.apm.2005.06.015⟩. ⟨hal-01858316⟩
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