Finite-grid instability in quasineutral hybrid simulations
type: Item
instance of: scholarly article
title: Finite-grid instability in quasineutral hybrid simulations
zbMATH Open document ID: 0824.76056
author: P. W. Rambo
published in: Journal of Computational Physics
publication date: 1995-11-09T00:00:00Z
review text: Hybrid simulation models some physical plasma species by particles while the others by fluids. Sometimes this procedure offers very useful insight into physical phenomena, especially in the case of long time scales. However, the influence of the finite grid upon the simulation (numerical instability) has not yet been thouroughly investigated. Now the linear stability, the nonlinear heating, and the saturation of quasineutral hybrid simulation are investigated with respect to the finite computational spatial grid. Cold ion distribution with no drift relative to the grid is stable whereas finite ion temperature or drift are destabilizing. Warm and cold plasma dispersion relations are evaluated taking into account the role of drifting to show ameliorating effects of the nearest particle weighting or linear (cloud in cell) weighting. Relevant applications to laser produced plasmas are promising.
Mathematics Subject Classification ID: 76M20
Mathematics Subject Classification ID: 76X05
zbMATH DE Number: 758621
zbMATH Keywords: linear weighting
zbMATH Keywords: linear stability
zbMATH Keywords: nonlinear heating
zbMATH Keywords: dispersion relations
zbMATH Keywords: role of drifting
zbMATH Keywords: nearest particle weighting
reviewed by: Iván Abonyi
MaRDI profile type: Publication
full work available at URL: jcph.1995.1086
OpenAlex ID: W1978153986
DOI: 10.1006/JCPH.1995.1086
description: scientific article; zbMATH DE number 758621