Sawtooth oscillations about helical current channels
- 1 April 1989
- journal article
- conference paper
- Published by AIP Publishing in Physics of Fluids B: Plasma Physics
- Vol. 1 (4) , 766-773
- https://doi.org/10.1063/1.859141
Abstract
An 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.Keywords
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