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Title: Multi-region relaxed magnetohydrodynamics with flow

We present an extension of the multi-region relaxed magnetohydrodynamics (MRxMHD) equilibrium model that includes plasma flow. This new model is a generalization of Woltjer's model of relaxed magnetohydrodynamics equilibria with flow. We prove that as the number of plasma regions becomes infinite, our extension of MRxMHD reduces to ideal MHD with flow. We also prove that some solutions to MRxMHD with flow are not time-independent in the laboratory frame, and instead have 3D structure which rotates in the toroidal direction with fixed angular velocity. This capability gives MRxMHD potential application to describing rotating 3D MHD structures such as 'snakes' and long-lived modes.
Authors:
; ;  [1] ;  [2]
  1. Research School of Physics and Engineering, Australian National University, ACT 0200 (Australia)
  2. Princeton Plasma Physics Laboratory, PO Box 451, Princeton, New Jersey 08543 (United States)
Publication Date:
OSTI Identifier:
22253352
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANGULAR VELOCITY; EQUILIBRIUM; MAGNETOHYDRODYNAMICS; MATHEMATICAL SOLUTIONS; PLASMA; POTENTIALS