Multi-region relaxed magnetohydrodynamics with flow

Journal Article · Tue Apr 15 00:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4870008· OSTI ID:22253352

Dewar, R. L.; Hole, M. J. ^[1]; Hudson, S. R. ^[2]

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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)

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.

• OSTI ID: 22253352
• Journal Information: Physics of Plasmas, Vol. 21, Issue 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANGULAR VELOCITY
EQUILIBRIUM
MAGNETOHYDRODYNAMICS
MATHEMATICAL SOLUTIONS
PLASMA
POTENTIALS