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Paper detail

Causal--Path Local Time--Stepping in the Discontinuous Galerkin Method for Maxwell's equations

We introduce a novel local time-stepping technique for marching-in-time algorithms. The technique is denoted as Causal-Path Local Time-Stepping (CPLTS) and it is applied for two time integration techniques: fourth order low--storage explicit Runge--Kutta (LSERK4) and second order Leapfrog (LF2). The CPLTS method is applied to evolve Maxwell's curl equations using a Discontinuous Galerkin (DG) scheme for the spatial discretization. Numerical results for LF2 and LSERK4 are compared with analytical solutions and the Montseny's LF2 technique. The results show that the CPLTS technique improves the dispersive and dissipative properties of LF2-LTS scheme.

preprint2013arXivOpen access
L. D. AnguloJ. AlvarezF. TeixeiraA. R. BretonesS. G. Garcia
Computational Engineering, Finance, and Sciencephysics.comp-phmath-phmath.MP
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L. D. AnguloJ. AlvarezF. TeixeiraA. R. BretonesS. G. Garcia

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