title: Homogeneous hydrodynamics of a collisional model of confined granular gases.
abstract: The hydrodynamic equation governing the homogeneous time evolution of the temperature in a model of confined granular gas is studied by means of the Enskog equation. The existence of a normal solution of the kinetic equation is assumed as a condition for hydrodynamics. Dimensional analysis implies a scaling of the distribution function that is used to determine it in the first Sonine approximation, with a coefficient that evolves in time through its dependence on the temperature. The theoretical predictions are compared to numerical results obtained by the direct simulation Monte Carlo method and a good agreement is found. The relevance of the normal homogeneous distribution function to derive inhomogeneous hydrodynamic equations, for instance using the Champan-Enskog algorithm, is indicated.
authors.affiliation: Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.
authors.forename: J Javier
authors.initials: JJ
authors.lastname: Brey
authors.affiliation: Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Maynar
authors.affiliation: Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.
authors.forename: M I
authors.initials: MI
authors.lastname: García de Soria
authors.affiliation: Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.
authors.forename: V
authors.initials: V
authors.lastname: Buzón