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Grid coupling mechanism in the semi-implicit adaptive Multi-Level Multi-Domain method

Innocenti, ME, Tronci, C, Markidis, S and Lapenta, G (2016) Grid coupling mechanism in the semi-implicit adaptive Multi-Level Multi-Domain method In: 10th International Conference on Numerical Modeling of Space Plasma Flows: ASTRONUM-2015, 2015-06-08 - 2015-06-12, Avignon, France.

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Abstract

The Multi-Level Multi-Domain (MLMD) method is a semi-implicit adaptive method for Particle-In-Cell plasma simulations. It has been demonstrated in the past in simulations of Maxwellian plasmas, electrostatic and electromagnetic instabilities, plasma expansion in vacuum, magnetic reconnection [1, 2, 3]. In multiple occasions, it has been commented on the coupling between the coarse and the refined grid solutions. The coupling mechanism itself, however, has never been explored in depth. Here, we investigate the theoretical bases of grid coupling in the MLMD system. We obtain an evolution law for the electric field solution in the overlap area of the MLMD system which highlights a dependance on the densities and currents from both the coarse and the refined grid, rather than from the coarse grid alone: grid coupling is obtained via densities and currents.

Item Type: Conference or Workshop Item (Conference Paper)
Subjects : Mathematics
Divisions : Faculty of Engineering and Physical Sciences > Mathematics
Authors :
AuthorsEmailORCID
Innocenti, MEUNSPECIFIEDUNSPECIFIED
Tronci, CUNSPECIFIEDUNSPECIFIED
Markidis, SUNSPECIFIEDUNSPECIFIED
Lapenta, GUNSPECIFIEDUNSPECIFIED
Date : 31 May 2016
Identification Number : 10.1088/1742-6596/719/1/012019
Copyright Disclaimer : Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Published under licence by IOP Publishing Ltd
Depositing User : Symplectic Elements
Date Deposited : 09 Aug 2016 10:35
Last Modified : 09 Aug 2016 10:35
URI: http://epubs.surrey.ac.uk/id/eprint/811636

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