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Abstract:
Regimes where intermolecular collisions are important but not numerous enough to
bring a gas into local thermodynamic equilibrium are called transition regimes.
In such regimes the compressible Navier-Stokes equations do not model a gas
correctly while Boltzmann or particle-based simulations are prohibitively
expensive. A family of fluid dynamical models will be introduced that extend
into the transition regime and that formally locally dissipate entropy. Possible
extensions of this approach to plasmas will be discussed.
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