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Variations on Hermite Methods for Wave Propagation

Published online by Cambridge University Press:  21 June 2017

Arturo Vargas*
Affiliation:
Department of Computational and Applied Mathematics, Rice University, Houston, TX 77005, USA
Jesse Chan*
Affiliation:
Department of Mathematics, Virginia Tech, Blacksburg, VA 24061, USA
Thomas Hagstrom*
Affiliation:
Department of Mathematics, Southern Methodist University, Dallas, TX 75275, USA
Timothy Warburton*
Affiliation:
Department of Mathematics, Virginia Tech, Blacksburg, VA 24061, USA
*
*Corresponding author. Email addresses:Arturo.Vargas@rice.edu (A. Vargas), jesse.chan@caam.rice.edu (J. Chan), thagstrom@mail.smu.edu (T. Hagstrom), tcew@vt.edu (T. Warburton)
*Corresponding author. Email addresses:Arturo.Vargas@rice.edu (A. Vargas), jesse.chan@caam.rice.edu (J. Chan), thagstrom@mail.smu.edu (T. Hagstrom), tcew@vt.edu (T. Warburton)
*Corresponding author. Email addresses:Arturo.Vargas@rice.edu (A. Vargas), jesse.chan@caam.rice.edu (J. Chan), thagstrom@mail.smu.edu (T. Hagstrom), tcew@vt.edu (T. Warburton)
*Corresponding author. Email addresses:Arturo.Vargas@rice.edu (A. Vargas), jesse.chan@caam.rice.edu (J. Chan), thagstrom@mail.smu.edu (T. Hagstrom), tcew@vt.edu (T. Warburton)

Abstract

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Hermite methods, as introduced by Goodrich et al. in [15], combine Hermite interpolation and staggered (dual) grids to produce stable high order accurate schemes for the solution of hyperbolic PDEs. We introduce three variations of this Hermite method which do not involve time evolution on dual grids. Computational evidence is presented regarding stability, high order convergence, and dispersion/dissipation properties for each new method. Hermite methods may also be coupled to discontinuous Galerkin (DG) methods for additional geometric flexibility [4]. An example illustrates the simplification of this coupling for Hermite methods.

Information

Type
Research Article
Copyright
Copyright © Global-Science Press 2017