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.

arXiv comment6 pages, 4 figures; v2: improved version to be published in EPL

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Cited by in corpus (12)

• Linear hydrodynamics for driven granular gases
• Hydrodynamic Burnett equations for inelastic Maxwell models of granular gases
• Homogeneous steady states in a granular fluid driven by a stochastic bath with friction
• Homogeneous states in driven granular mixtures: Enskog kinetic theory versus molecular dynamics simulations
• Simple shear flow in inelastic Maxwell models
• Shear-rate dependent transport coefficients for inelastic Maxwell models
• Time-dependent homogeneous states of binary granular suspensions
• Does the Chapman--Enskog expansion for sheared granular gases converge?
• Generalized transport coefficients for inelastic Maxwell mixtures under shear flow
• Unsteady non-Newtonian hydrodynamics in granular gases
• 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