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Sawtooth oscillations about helical current channelsAn existing pseudospectral code for solving the three-dimensional equations of reduced magnetohydrodynamics is extended by adding a temperature equation. Resistivities and thermal conductivities are given their (isotropic) Braginskii temperature dependences, and are advanced self-consistently. Realistic-looking sawtooth oscillations are observed at modest Lundquist and Reynolds numbers. However, the oscillations are excited upon, and relax back to, a helical (rather than an axisymmetric) current channel.
Document ID
19890048434
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Theobald, M. L.
(Los Alamos National Lab. NM, United States)
Montgomery, David
(Los Alamos National Lab. NM, United States)
Doolen, G. D.
(Los Alamos National Laboratory NM, United States)
Dahlburg, J. P.
(U.S. Navy, Naval Research Laboratory, Washington DC, United States)
Date Acquired
August 14, 2013
Publication Date
April 1, 1989
Publication Information
Publication: Physics of Fluids B
Volume: 1
ISSN: 0899-8221
Subject Category
Plasma Physics
Accession Number
89A35805
Funding Number(s)
CONTRACT_GRANT: DE-FG02-85ER-53194
CONTRACT_GRANT: NAGW-710
Distribution Limits
Public
Copyright
Other

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