Stability analysis for a thermodynamically consistent model of relativistic fluid dynamics

Open access
Date
2019-01Type
- Journal Article
Abstract
In relativistic fluid mechanics, positive entropy production is known to be insufficient for guaranteeing stability. Much stronger criteria for thermodynamic admissibility have become available in nonequilibrium thermodynamics. We here perform a linear stability analysis for a model of relativistic hydrodynamics that is based on the general equation for the nonequilibrium reversible-irreversible coupling (GENERIC) framework of nonequilibrium thermodynamics. Assuming a quadratic entropy function near equilibrium, we find stability for the entire range of physically meaningful model parameters for relativistic fluid dynamics based on GENERIC. The search for thermodynamic admissibility moreover reveals a fundamental difference between liquids and gases in relativistic fluid dynamics. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000315037Publication status
publishedExternal links
Journal / series
Physical Review EVolume
Pages / Article No.
Publisher
American Physical SocietyOrganisational unit
03359 - Oettinger, Christian / Oettinger, Christian
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