Title
Robust coupling of DPG and BEM for a singularly perturbed transmission problem.
Abstract
We consider a transmission problem consisting of a singularly perturbed reaction diffusion equation on a bounded domain and the Laplacian in the exterior, connected through standard transmission conditions. We establish a DPG scheme coupled with Galerkin boundary elements for its discretization, and prove its robustness for the field variables in so-called balanced norms. Our coupling scheme is the one from Führer et al., (2016), adapted to the singularly perturbed case by using the scheme from Heuer and Karkulik (2015). Essential feature of our method is that optimal test functions have to be computed only locally. We report on various numerical experiments in two dimensions.
Year
DOI
Venue
2017
10.1016/j.camwa.2016.09.016
Computers & Mathematics with Applications
Keywords
Field
DocType
Reaction dominated diffusion,Transmission problem,DPG method with optimal test functions,Boundary elements,Coupling,Ultra-weak formulation
Discretization,Mathematical optimization,Coupling,Mathematical analysis,Galerkin method,Robustness (computer science),Reaction–diffusion system,Mathematics,Bounded function,Laplace operator
Journal
Volume
Issue
ISSN
74
8
0898-1221
Citations 
PageRank 
References 
2
0.38
8
Authors
2
Name
Order
Citations
PageRank
Thomas Führer13711.17
Norbert Heuer226339.70