8102

A curved-element unstructured discontinuous Galerkin method on GPUs for the Euler equations

M. Siebenborn, V. Schulz, S. Schmidt
Universitat Trier, Universitatsring 15, D-54296 Trier, Germany
arXiv:1208.4772v1 [math.NA] (23 Aug 2012)

@article{2012arXiv1208.4772S,

   author={Siebenborn}, M. and {Schulz}, V. and {Schmidt}, S.},

   title={"{A curved-element unstructured discontinuous Galerkin method on GPUs for the Euler equations}"},

   journal={ArXiv e-prints},

   archivePrefix={"arXiv"},

   eprint={1208.4772},

   primaryClass={"math.NA"},

   keywords={Mathematics – Numerical Analysis},

   year={2012},

   month={aug},

   adsurl={http://adsabs.harvard.edu/abs/2012arXiv1208.4772S},

   adsnote={Provided by the SAO/NASA Astrophysics Data System}

}

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In this work we consider Runge-Kutta discontinuous Galerkin methods (RKDG) for the solution of hyperbolic equations enabling high order discretization in space and time. We aim at an efficient implementation of DG for Euler equations on GPUs. A mesh curvature approach is presented for the proper resolution of the domain boundary. This approach is based on the linear elasticity equations and enables a boundary approximation with arbitrary, high order. In order to demonstrate the performance of the boundary curvature a massively parallel solver on graphics processors is implemented and utilized for the solution of the Euler equations of gas-dynamics.
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