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A Moving Finite Element Model of the Tokamak Scrapeoff Layer
Author(s) -
Glasser Alan H.,
Kuprat Andrew P.
Publication year - 1994
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.2150340250
Subject(s) - tokamak , grid , equidistributed sequence , finite element method , simple (philosophy) , anisotropy , piecewise , layer (electronics) , mechanics , physics , geometry , computational physics , computer science , classical mechanics , mathematical analysis , mathematics , optics , materials science , plasma , philosophy , epistemology , quantum mechanics , composite material , thermodynamics
Most numerical simulations of the tokamak scrapeoff layer use a mapping to flux coordinates and a piecewise equidistributed grid in those coordinates to resolve multiple length scales and anisotropy. We have developed an alternative numerical method using simple cylindrical coordinates with a complex adaptive grid scheme, based on an unstructured grid of triangles which move adaptively, aligning themselves with the magnetic field and concentrating in regions of sharp gradients.