A two-dimensional finite element model of the edge plasma
type: Item
instance of: scholarly article
title: A two-dimensional finite element model of the edge plasma
zbMATH Open document ID: 0824.76050
author: Roger A. Vesey
author: Don Steiner
published in: Journal of Computational Physics
publication date: 1995-04-05T00:00:00Z
review text: Edge plasma in a fusion device is that region of transition where the high temperature dense core plasma practically meets the physical walls of the vessel. In this paper a new computational model is proposed to describe its behaviour, based on the discretized version of Braginskij- type plasma fluid equations and on a one-energy-group neutral particle diffusion equation. In order to yield an accurate approximate solution of the original nonlinear partial differential equations where significant values of the first derivative occur, the discretized nonlinear algebraic equations are solved by a damped modified Newton iteration scheme. The paper reports not only on the capabilities of the numerical method, but also on the improvements of edge plasma modelling (e.g. inclusion of two- energy-group diffusion, charge exchange, non-orthogonal grid, etc.).
reviewed by: Iván Abonyi
Mathematics Subject Classification ID: 76M10
Mathematics Subject Classification ID: 76X05
zbMATH DE Number: 740632
zbMATH Keywords: fusion device
zbMATH Keywords: Braginskij-type plasma fluid equations
zbMATH Keywords: one-energy-group neutral particle diffusion equation
zbMATH Keywords: damped modified Newton iteration scheme
zbMATH Keywords: two-energy-group diffusion
zbMATH Keywords: charge exchange
zbMATH Keywords: non-orthogonal grid
MaRDI profile type: Publication
full work available at URL: jcph.1995.1029
OpenAlex ID: W2060062522
DOI: 10.1006/JCPH.1995.1029
description: scientific article; zbMATH DE number 740632