Memory effects in the relaxation of a confined granular gas

Abstract

The accuracy of a model to describe the horizontal dynamics of a confined quasi-two-dimensional system of inelastic hard spheres is discussed by comparing its predictions for the relaxation of the temperature in an homogenous system with molecular dynamics simulation results for the original system. A reasonably good agreement is found. Next, the model is used to investigate the peculiarities of the nonlinear evolution of the temperature when the parameter controlling the energy injection is instantaneously changed while the system was relaxing. This can be considered as a non-equilibrium generalization of the Kovacs effect. It is shown that, in the low density limit, the effect can be accurately described by using a simple kinetic theory based on the first Sonine approximation for the one-particle distribution function. Some possible experimental implications are indicated.

References in corpus (4)

• Segregation in granular binary mixtures: Thermal diffusion
• Universal reference state in a driven homogeneous granular gas
• Memory Effects in the Standard Model for Glasses
• Energy fluctuations in a randomly driven granular fluid

Cited by in corpus (7)

• Giant Kovacs-Like Memory Effect for Active Particles
• Hydrodynamics for a model of a confined quasi-two-dimensional granular gas
• Shear viscosity of a model for confined granular media
• Non-equilibrium memory effects: granular fluids and beyond
• Dynamics of an inelastic tagged particle under strong confinement
• Reducing segregation in vibrated binary-sized granular mixtures by excessive small particle introduction
• Confined granular gases under the influence of vibrating walls