Hostname: page-component-7b7567c8c-fvjsw Total loading time: 0 Render date: 2026-11-15T18:21:57.139Z Has data issue: false hasContentIssue false

Asymptotic-Preserving Scheme for the M1-Maxwell System in the Quasi-Neutral Regime

Published online by Cambridge University Press:  01 February 2016

S. Guisset*
Affiliation:
Univ. Bordeaux, IMB, UMR 5251, F-33405 Talence, FranceUniv. Bordeaux, CELIA, UMR 5107, F- 33400 Talence, France
S. Brull
Affiliation:
Univ. Bordeaux, IMB, UMR 5251, F-33405 Talence, France
B. Dubroca
Affiliation:
Univ. Bordeaux, CELIA, UMR 5107, F- 33400 Talence, France
E. d'Humières
Affiliation:
Univ. Bordeaux, CELIA, UMR 5107, F- 33400 Talence, France
S. Karpov
Affiliation:
Keldysh Institute for Applied Mathematics, 125047 Moscow, Russian Federation
I. Potapenko
Affiliation:
Keldysh Institute for Applied Mathematics, 125047 Moscow, Russian Federation
*
*Corresponding author. Email address:guisset@celia.u-bordeaux1.fr (S. Guisset)

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the 'Save PDF' action button.

This work deals with the numerical resolution of the M1-Maxwell system in the quasi-neutral regime. In this regime the stiffness of the stability constraints of classical schemes causes huge calculation times. That is why we introduce a new stable numerical scheme consistent with the transitional and limit models. Such schemes are called Asymptotic-Preserving (AP) schemes in literature. This new scheme is able to handle the quasi-neutrality limit regime without any restrictions on time and space steps. This approach can be easily applied to angular moment models by using a moments extraction. Finally, two physically relevant numerical test cases are presented for the Asymptotic-Preserving scheme in different regimes. The first one corresponds to a regime where electromagnetic effects are predominant. The second one on the contrary shows the efficiency of the Asymptotic-Preserving scheme in the quasi-neutral regime. In the latter case the illustrative simulations are compared with kinetic and hydrodynamic numerical results.

Information

Type
Research Article
Copyright
Copyright © Global-Science Press 2016