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Journal articles
A GPU-accelerated nodal discontinuous Galerkin method with high-order absorbing boundary conditions and corner/edge compatibility
Abstract : Discontinuous Galerkin finite element schemes exhibit attractive features for accurate large-scale wave-propagation simulations on modern parallel architectures. For many applications, these schemes must be coupled with non-reflective boundary treatments to limit the size of the computational domain without losing accuracy or computational efficiency, which remains a challenging task. In this paper, we present a combination of a nodal discontinuous Galerkin method with high-order absorbing boundary conditions (HABCs) for cuboidal computational domains. Compatibility conditions are derived for HABCs intersecting at the edges and the corners of a cuboidal domain. We propose a GPU implementation of the computational procedure, which results in a multidimensional solver with equations to be solved on 0D, 1D, 2D and 3D spatial regions. Numerical results demonstrate both the accuracy and the computational efficiency of our approach.
https://hal.archives-ouvertes.fr/hal-01383074
Contributor : Axel Modave <>
Submitted on : Tuesday, October 18, 2016 - 9:13:13 AM
Last modification on : Wednesday, June 2, 2021 - 3:41:06 AM
Contributor : Axel Modave <>
Submitted on : Tuesday, October 18, 2016 - 9:13:13 AM
Last modification on : Wednesday, June 2, 2021 - 3:41:06 AM
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