Local Timestepping Discontinuous Galerkin Methods for Electromagnetic RF Field Problems

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 5Language: englishTyp: PDF

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Goedel, N.; Schomann, S.; Clemens, M. (Chair for Theory of Electrical Engineering and Computational Electromagnetics, Faculty of Electrical Engineering, Helmut-Schmidt-University, University of the Federal Armed Forces Hamburg, P.O. Box 700822, 22008 Hamburg, Germany)
Warburton, T. (Computational and Applied Mathematics, Rice University, 6100 Main Street MS-134, Houston, TX, USA)

A 3D Time Domain High-Order Discontinuous Galerkin Finite Element Method (DG-FEM) for high frequency electromagnetic wave computations is presented. The method is introduced by highlighting the differences compared to conventional FEM, the FVM as well as to FDM and FIT. Time integration as the major bottleneck is identified and a local timestepping strategy is presented to resolve this bottleneck.