Aging to non-Newtonian hydrodynamics in a granular gas
Soft Condensed Matter
2007-05-23 v2 Statistical Mechanics
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.
Cite
@article{arxiv.cond-mat/0612394,
title = {Aging to non-Newtonian hydrodynamics in a granular gas},
author = {A. Astillero and A. Santos},
journal= {arXiv preprint arXiv:cond-mat/0612394},
year = {2007}
}
Comments
6 pages, 4 figures; v2: improved version to be published in EPL