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BGK models for inert mixtures: comparison and applications (2102.12757v1)
Published 25 Feb 2021 in math-ph, cs.NA, math.MP, and math.NA
Abstract: Consistent BGK models for inert mixtures are compared, first in their kinetic behavior and then versus the hydrodynamic limits that can be derived in different collision-dominated regimes. The comparison is carried out both analytically and numerically, for the latter using an asymptotic preserving semi-Lagrangian scheme for the BGK models. Application to the plane shock wave in a binary mixture of noble gases is also presented.