Title
Adaptive refinement for hp-Version Trefftz discontinuous Galerkin methods for the homogeneous Helmholtz problem.
Abstract
In this article, we develop an hp-adaptive refinement procedure for Trefftz discontinuous Galerkin methods applied to the homogeneous Helmholtz problem. Our approach combines not only mesh subdivision (h---refinement) and local basis enrichment (p---refinement), but also incorporates local directional adaptivity, whereby the elementwise plane wave basis is aligned with the dominant scattering direction. Numerical experiments based on employing an empirical a posteriori error indicator clearly highlight the efficiency of the proposed approach for various examples.
Year
DOI
Venue
2019
10.1007/s10444-018-9621-9
Adv. Comput. Math.
Keywords
Field
DocType
35J05, 65N30, 65N50, Adaptivity, Discontinuous Galerkin methods, Homogeneous Helmholtz problem, Trefftz methods, hp-finite element methods
Discontinuous Galerkin method,Mathematical optimization,Plane wave,Adaptive refinement,Mathematical analysis,Homogeneous,A priori and a posteriori,Helmholtz free energy,Subdivision,Scattering,Mathematics
Journal
Volume
Issue
ISSN
45
1
1019-7168
Citations 
PageRank 
References 
0
0.34
9
Authors
3
Name
Order
Citations
PageRank
Scott Congreve131.46
Paul Houston217215.86
Ilaria Perugia3534134.99