Author(s): Oliveira, J. M. S. ; Soares, A. J. ; Ramos, M. P. Machado
Date: 2022
Persistent ID: https://hdl.handle.net/1822/88149
Origin: RepositóriUM - Universidade do Minho
Subject(s): Relativistic fluids; Robertson-Walker space-time; Minkowski space-time; Polyatomic gases; Kinetic theory; BGK models
The principal goal of the present paper is to study rarefied relativistic polyatomic gases in both Minkowski spacetime and Robertson-Walker spacetime. The field equations are determined from a recently developed generalized relativistic BGK-type model for polyatomic gases. This model is applied to both Minkowski spacetime and at and non at Robertson-Walker spacetimes. The equation of state for the non-equilibrium dynamical pressure is obtained from the Chapman-Enskog method applied to a variant of the Anderson and Witting model for polyatomic gases.
