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Reformulation of the Resistive MHD System for Ensuring Discrete
Preservation of Constraints
Daniel R. Reynolds
Department of Mathematics
UCSD
Abstract
We investigate the system of partial differential equations used in
resistive magnetohydrodynamic modeling of fusion plasmas. This system
couples the Euler and Maxwell equations for evolution of a charged fluid
in an electromagnetic field, hence the magnetic field in the resulting
PDE system must evolve on a divergence-free constraint manifold. As
traditional numerical solution approaches often violate these
constraints, we investigate a reformulation of the resistive MHD system
to allow for accurate evolution of the continuum-level equations, while
simultaneously ensuring that the solution satisfies the solenoidal
constraint.
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