Nonaxisymmetric, multi-region relaxed magnetohydrodynamic equilibrium solutions

Details Nonaxisymmetric, multi-region relaxed magnetohydrodynamic equilibrium solutions Nonaxisymmetric, multi-region relaxed magnetohydrodynamic equilibrium solutions

2011-07-26

arxiv.org/abs/1107.5202v2

Plasma Phys. Control. Fusion 54, 014005 (2012)

Physics

Plasma Physics

Submitted to Plasma Physics and Controlled Fusion for publication with a cluster of papers associated with workshop: Stability

Scientific paper

10.1088/0741-3335/54/1/014005

We describe a magnetohydrodynamic (MHD) constrained energy functional for equilibrium calculations that combines the topological constraints of ideal MHD with elements of Taylor relaxation. Extremizing states allow for partially chaotic magnetic fields and non-trivial pressure profiles supported by a discrete set of ideal interfaces with irrational rotational transforms. Numerical solutions are computed using the Stepped Pressure Equilibrium Code, SPEC, and benchmarks and convergence calculations are presented.

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