Aging to non-Newtonian hydrodynamics in a granular gas

Abstract

The evolution to the steady state of a granular gas subject to simple shear flow is analyzed by means of computer simulations. It is found that, regardless of its initial preparation, the system reaches (after a transient period lasting a few collisions per particle) a non-Newtonian (unsteady) hydrodynamic regime, even at strong dissipation and for states where the time scale associated with inelastic cooling is shorter than the one associated with the irreversible fluxes. Comparison with a simplified rheological model shows a good agreement.

6 pages, 4 figures; v2: improved version to be published in EPL

References in corpus (5)

• Inherent Rheology of a Granular Fluid in Uniform Shear Flow
• The Boltzmann equation for driven systems of inelastic soft spheres
• Dynamics of a hard sphere granular impurity
• The rich behavior of the Boltzmann equation for dissipative gases
• Uniform shear flow in dissipative gases. Computer simulations of inelastic hard spheres and (frictional) elastic hard spheres

Cited by in corpus (5)

• Shear-rate dependent transport coefficients for inelastic Maxwell models
• Does the Chapman--Enskog expansion for sheared granular gases converge?
• Time-dependent homogeneous states of binary granular suspensions
• Rheological effects in the linear response and spontaneous fluctuations of a sheared granular gas
• Fluctuations in the Uniform Shear Flow state of a granular gas