Current advance method and cyclic leapfrog for 2D multispecies hybrid plasma simulations
type: Item
instance of: scholarly article
title: Current advance method and cyclic leapfrog for 2D multispecies hybrid plasma simulations
zbMATH Open document ID: 0801.76057
author: Alan P. Matthews
published in: Journal of Computational Physics
publication date: 1994-01-01T00:00:00Z
review text: The procedure introduced and described here is a new algorithm for hybrid plasma simulations. Its physical basis is the hybrid plasma model where ions are massive particles, but the electrons are represented by a massless fluid. In contrast with previous methods, this one is distinguished by four features: (1) it is capable of treating multiple ion species -- with only one pass through the particle data tables; (2) it advances the ionic current density, whereas the moment method advances fluid velocity; (3) it collects ``free streaming'' currents, and by this it avoids the treatment of the advective and ionic stress tensor terms in the moment method; (4) it is an application of the modified midpoint method to magnetic field evolution. The procedure is tested whether it models physics acceptably or not. The tests show e.g. that a quiet plasma remains quiet and stable with the energy conserved to within 5\% over about hundred gyrotime of ions. The MHD waves propagate at the correct speeds in the non-dispersive limit. Ion beams show a known instability, fast MHD pulse shows the importance of a care of the choice of cell sizes to avoid distortion of physics.
reviewed by: Iván Abonyi
Mathematics Subject Classification ID: 76M20
Mathematics Subject Classification ID: 76X05
zbMATH DE Number: 580117
zbMATH Keywords: free streaming currents
zbMATH Keywords: ion beams
zbMATH Keywords: multiple ion species
zbMATH Keywords: ionic current density
zbMATH Keywords: modified midpoint method
zbMATH Keywords: magnetic field evolution
zbMATH Keywords: MHD waves
zbMATH Keywords: fast MHD pulse
MaRDI profile type: Publication
full work available at URL: jcph.1994.1084
OpenAlex ID: W1990386529
DOI: 10.1006/JCPH.1994.1084
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description: scientific article; zbMATH DE number 580117