Voir la notice de l'article provenant de la source Numdam
This article is the first of a series where we develop and analyze structure-preserving finite element discretizations for the time-dependent 2D Maxwell system with long-time stability properties, and propose a charge-conserving deposition scheme to extend the stability properties in the case where the current source is provided by a particle method. The schemes proposed here derive from a previous study where a generalized commuting diagram was identified as an abstract compatibility criterion in the design of stable schemes for the Maxwell system alone, and applied to build a series of conforming and non-conforming schemes in the 3D case. Here the theory is extended to account for approximate sources, and specific charge-conserving schemes are provided for the 2D case. In this article we study two schemes which include a strong discretization of the Ampere law. The first one is based on a standard conforming mixed finite element discretization and the long-time stability is ensured by a Raviart-Thomas finite element interpolation for the current source, thanks to its commuting diagram properties. The second one is a new non-conforming variant where the numerical fields are sought in fully discontinuous spaces. Numerical experiments involving Maxwell and Maxwell-Vlasov problems are then provided to validate the stability of the proposed methods.
DOI : 10.5802/smai-jcm.20
Keywords: Maxwell equations, Gauss laws, structure-preserving, PIC, charge-conserving current deposition, conforming finite elements, discontinuous Galerkin, Conga method.
Campos Pinto, Martin 1 ; Sonnendrücker, Eric 2
@article{SMAI-JCM_2017__3__53_0,
author = {Campos Pinto, Martin and Sonnendr\"ucker, Eric},
title = {Compatible {Maxwell} solvers with particles {I:} conforming and non-conforming {2D} schemes with a strong {Ampere} law},
journal = {The SMAI Journal of computational mathematics},
pages = {53--89},
publisher = {Soci\'et\'e de Math\'ematiques Appliqu\'ees et Industrielles},
volume = {3},
year = {2017},
doi = {10.5802/smai-jcm.20},
mrnumber = {3695788},
zbl = {1416.78028},
language = {en},
url = {http://geodesic.mathdoc.fr/articles/10.5802/smai-jcm.20/}
}
TY - JOUR AU - Campos Pinto, Martin AU - Sonnendrücker, Eric TI - Compatible Maxwell solvers with particles I: conforming and non-conforming 2D schemes with a strong Ampere law JO - The SMAI Journal of computational mathematics PY - 2017 SP - 53 EP - 89 VL - 3 PB - Société de Mathématiques Appliquées et Industrielles UR - http://geodesic.mathdoc.fr/articles/10.5802/smai-jcm.20/ DO - 10.5802/smai-jcm.20 LA - en ID - SMAI-JCM_2017__3__53_0 ER -
%0 Journal Article %A Campos Pinto, Martin %A Sonnendrücker, Eric %T Compatible Maxwell solvers with particles I: conforming and non-conforming 2D schemes with a strong Ampere law %J The SMAI Journal of computational mathematics %D 2017 %P 53-89 %V 3 %I Société de Mathématiques Appliquées et Industrielles %U http://geodesic.mathdoc.fr/articles/10.5802/smai-jcm.20/ %R 10.5802/smai-jcm.20 %G en %F SMAI-JCM_2017__3__53_0
Campos Pinto, Martin; Sonnendrücker, Eric. Compatible Maxwell solvers with particles I: conforming and non-conforming 2D schemes with a strong Ampere law. The SMAI Journal of computational mathematics, Tome 3 (2017), pp. 53-89. doi: 10.5802/smai-jcm.20
Cité par Sources :