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arXiv · 1611.01314

Implicit-explicit, realizability-preserving first-order scheme for moment models with Lipschitz-continuous source terms

Florian Schneider
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Abstract

We derive an implicit-explicit (IMEX), realizability-preserving first-order scheme for moment models with Lipschitz-continuous source terms. In contrast to fully-explicit schemes the time step does not depend on the physical parameters, removing the stiffness from the system. Furthermore, a wider class of collision operators (e.g. the Laplace-Beltrami operator) can be used. The derived scheme is applied to minimum-entropy models.

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Florian Schneider. 2016-11-04. Implicit-explicit, realizability-preserving first-order scheme for moment models with Lipschitz-continuous source terms. https://arxiv.org/abs/1611.01314

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