With symmetric local absorbing boundary conditions for the Helmholtz equation scattering problems can be solved on a truncated domain, where the outgoing radiation condition is approximated by a Dirichlet-to-Neumann map with higher tangential derivatives on its outer boundary. Feng’s conditions are symmetric local absorbing boundary conditions, which are based on an asymptotic expansion of the coefficients of the exact Dirichlet-to-Neumann map for large radia of the circular outer boundary. In this article we analyse the well-posedness of variational formulations with symmetric local absorbing boundary conditions in general and show how the modelling error introduced by Feng’s conditions depends on the radius of the truncated domain.
DOI : 10.1051/m2an/2014029
Mots clés : Absorbing boundary conditions, Feng’s conditions, error analysis
@article{M2AN_2015__49_1_257_0, author = {Schmidt, Kersten and Heier, Christian}, title = {An analysis of {Feng{\textquoteright}s} and other symmetric local absorbing boundary conditions}, journal = {ESAIM: Mathematical Modelling and Numerical Analysis }, pages = {257--273}, publisher = {EDP-Sciences}, volume = {49}, number = {1}, year = {2015}, doi = {10.1051/m2an/2014029}, zbl = {1457.65214}, mrnumber = {3342200}, language = {en}, url = {http://www.numdam.org/articles/10.1051/m2an/2014029/} }
TY - JOUR AU - Schmidt, Kersten AU - Heier, Christian TI - An analysis of Feng’s and other symmetric local absorbing boundary conditions JO - ESAIM: Mathematical Modelling and Numerical Analysis PY - 2015 SP - 257 EP - 273 VL - 49 IS - 1 PB - EDP-Sciences UR - http://www.numdam.org/articles/10.1051/m2an/2014029/ DO - 10.1051/m2an/2014029 LA - en ID - M2AN_2015__49_1_257_0 ER -
%0 Journal Article %A Schmidt, Kersten %A Heier, Christian %T An analysis of Feng’s and other symmetric local absorbing boundary conditions %J ESAIM: Mathematical Modelling and Numerical Analysis %D 2015 %P 257-273 %V 49 %N 1 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/m2an/2014029/ %R 10.1051/m2an/2014029 %G en %F M2AN_2015__49_1_257_0
Schmidt, Kersten; Heier, Christian. An analysis of Feng’s and other symmetric local absorbing boundary conditions. ESAIM: Mathematical Modelling and Numerical Analysis , Tome 49 (2015) no. 1, pp. 257-273. doi : 10.1051/m2an/2014029. http://www.numdam.org/articles/10.1051/m2an/2014029/
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