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Higher Order Lagrange Finite Elements In M3D [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Science, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
768 Kilobytes pages : digital, PDF file
Additional Creators
United States. Department of Energy. Office of Science and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The M3D code has been using linear finite elements to represent multilevel MHD on 2-D poloidal planes. Triangular higher order elements, up to third order, are constructed here in order to provide M3D the capability to solve highly anisotropic transport problems. It is found that higher order elements are essential to resolve the thin transition layer characteristic of the anisotropic transport equation, particularly when the strong anisotropic direction is not aligned with one of the Cartesian coordinates. The transition layer is measured by the profile width, which is zero for infinite anisotropy. It is shown that only higher order schemes have the ability to make this layer converge towards zero when the anisotropy gets stronger and stronger. Two cases are considered. One has the strong transport direction partially aligned with one of the element edges, the other doesn't have any alignment. Both cases have the strong transport direction misaligned with the grid line by some angles.
Report Numbers
E 1.99:pppl-4032
pppl-4032
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
12/17/2004.
"pppl-4032"
H.R. Strauss; J. Chen; W. Park; G. Fu; S.C. Jardin; L.E. Sugiyama; J. Breslau.
Princeton Plasma Physics Lab., Princeton, NJ (US)
Type of Report and Period Covered Note
Topical;
Funding Information
AC02-76CH03073
View MARC record | catkey: 14739313