Long Time Behaviour of an Exponential Integrator for a Vlasov-Poisson System with Strong Magnetic Field
Year: 2015
Author: Emmanuel Frénod, Sever A. Hirstoaga, Mathieu Lutz, Eric Sonnendrücker
Communications in Computational Physics, Vol. 18 (2015), Iss. 2 : pp. 263–296
Abstract
With the aim of solving in a four dimensional phase space a multi-scale Vlasov-Poisson system, we propose in a Particle-In-Cell framework a robust time-stepping method that works uniformly when the small parameter vanishes. As an exponential integrator, the scheme is able to use large time steps with respect to the typical size of the solution's fast oscillations. In addition, we show numerically that the method has accurate long time behaviour and that it is asymptotic preserving with respect to the limiting Guiding Center system.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/cicp.070214.160115a
Communications in Computational Physics, Vol. 18 (2015), Iss. 2 : pp. 263–296
Published online: 2015-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 34
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