ALE-DGSEM approximation of wave reflection and transmission from a moving medium

被引：7

作者：

Winters, Andrew R. ^{[1
]}

Kopriva, David A. ^{[1
]}

机构：

[1] Florida State Univ, Dept Math, Tallahassee, FL 32306 USA

来源：

JOURNAL OF COMPUTATIONAL PHYSICS | 2014年 / 263卷

关键词：

Discontinuous Galerkin spectral element method; Moving material interface; Arbitrary Lagrangian-Eulerian; Conservation laws; Numerical flux; Wave reflection and transmission; ELECTROMAGNETIC-WAVES; ELEMENT-METHOD; SCATTERING; PLANE; ELECTRODYNAMICS; REFRACTION; SURFACES; LIGHT; SOUND;

D O I：

10.1016/j.jcp.2014.01.022

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

We derive a spectrally accurate moving mesh method for mixed material interface problems modeled by Maxwell's or the classical wave equation. We use a discontinuous Galerkin spectral element approximation with an arbitrary Lagrangian-Eulerian mapping and derive the exact upwind numerical fluxes to model the physics of wave reflection and transmission at jumps in material properties. Spectral accuracy is obtained by placing moving material interfaces at element boundaries and solving the appropriate Riemann problem. We present numerical examples showing the performance of the method for plane wave reflection and transmission at dielectric and acoustic interfaces. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：233 / 267

页数：35

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