Conservative formulation develops a drift-reduced plasma model, demonstrating conservation laws in magnetic geometry, implying robust applications.
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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Lucca et al. (2026) studied this question.
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