Conservative formulation of the drift-reduced fluid plasma model
arXiv:2601.05704 · doi:10.1017/S0022377825101104
Abstract
A conservative formulation of the drift-reduced fluid plasma model is constructed by analytically inverting the implicit relation defining the polarisation velocity as a function of the time-derivative of the electric field. The obtained model satisfies exact conservation laws for energy, mass, charge and momentum, in arbitrary magnetic geometry, also when electromagnetic fluctuations are included.
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