Hydrodynamic Character of the Non-equipartition of Kinetic Energy in Binary Granular Gases

Abstract

The influence of the heating mechanism on the kinetic energy densities of the components of a vibrated granular mixture is investigated. Collisions of the particles with the vibrating wall are inelastic and characterized by two coefficients of normal restitution, one for each of the two species. By means of molecular dynamics simulations, it is shown that the non-equipartition of kinetic energy is not affected by the differential mechanism of energy injection, aside the usual boundary layer around the wall. The macroscopic state of the mixture in the bulk is defined by intensive variables that do not include the partial granular temperatures of the components.

References in corpus (2)

• Heating mechanism affects equipartition in a binary granular system
• Vibrated granular gas confined by a piston

Cited by in corpus (5)

• Mpemba effect in driven granular Maxwell gases
• Kinetic theory of binary particles with unequal mean velocities and non-equipartition energies
• Thermal Segregation Beyond Navier-Stokes
• Critical behavior of two freely evolving granular gases separated by an adiabatic piston
• Asymptotic velocity distribution of a driven one dimensional binary granular Maxwell gas