Analysis of an Hp-Non-conforming Discontinuous Galerkin Spectral Element Method for Wave
Abstract
We analyze the consistency, stability, and convergence of an hp discontinuous Galerkin spectral element method. The analysis is carried out simultaneously for acoustic, elastic coupled elastic-acoustic, and electromagnetic wave propagation. Our analytical results are developed for both conforming and non-conforming approximations on hexahedral meshes using either exact integration with Legendre-Gauss quadrature or inexact integration with Legendre-Gauss-Lobatto quadrature. A mortar-based non-conforming approximation is developed to treat both h and p non-conforming meshes simultaneously. The mortar approach is constructed in such a way that consistency, stability, and convergence analyses for non-conforming approximations follows the conforming counterparts with minimal modifications. In particular, sharp hp-convergence results are proved for non-conforming approximations for time dependent wave propagation problems using inexact quadrature.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2011
- Accession Number
- ADA555327
Entities
People
- Omar Ghattas
- Tan Bui-thanh
Organizations
- University of Texas at Austin