Modave, A.Atle, A.Chan, J.Warburton, T.2018-01-192018-01-192017-12-140029-5981http://hdl.handle.net/10919/81865Discontinuous 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.1659 - 1686 (28) page(s)application/pdfenIn CopyrightTechnologyEngineering, MultidisciplinaryMathematics, Interdisciplinary ApplicationsEngineeringMathematicsabsorbing boundary conditiondiscontinuous GalerkinFinite element methodGPU computingtransient wave propagationACOUSTIC SCATTERING PROBLEMSPERFECTLY MATCHED LAYERWAVE-PROPAGATIONHETEROGENEOUS MEDIAHIGH-FREQUENCYELASTIC-WAVESDGTD METHODAPPROXIMATIONSSIMULATIONEQUATIONArticle - Refereedhttps://doi.org/10.1002/nme.557611211Warburton, T [0000-0002-3202-1151]1097-0207