A magic two-relaxation-time lattice Boltzmann algorithm for magnetohydrodynamics
Paul J. Dellar
Abstract:The two-relaxation-time collision operator in discrete kinetic theory models collisions between particles by grouping them into pairs with antiparallel velocities. It prescribes a linear relaxation towards equilibrium with one rate for the even combination of distribution functions for each pair, and another rate for the odd combination. We reformulate this collision operator using relaxation rates for the forward-propagating and backward-propagating combinations instead. An optimal pair of relaxation rates se… Show more
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