Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/18791
Title: Randomly driven granular fluids: Large-scale structure
Author: Van Noije, T. P. C.
Ernst, M. H.
Trizac, Emmanuel
Pagonabarraga Mora, Ignacio
Keywords: Materials granulars
Equacions diferencials
Termodinàmica del desequilibri
Granular materials
Differential equations
Nonequilibrium thermodynamic
Issue Date: 1999
Publisher: The American Physical Society
Abstract: The nonequilibrium steady state of a granular fluid, driven by a random external force, is demonstrated to exhibit long-range correlations, which behave as $\ensuremath{\sim}1/r$ in three and $\ensuremath{\sim}\mathrm{ln}(L/r)$ in two dimensions. We calculate the corresponding structure factors over the whole range of wave numbers, and find good agreement with two-dimensional molecular dynamics simulations. It is also shown by means of a mode coupling calculation, how the mean field values for the steady-state temperature and collision frequency, as obtained from the Enskog-Boltzmann equation, are renormalized by long wavelength hydrodynamic fluctuations.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.59.4326
It is part of: Physical Review e, 1999, vol. 59, núm. 4, p. 4326-4341
Related resource: http://dx.doi.org/10.1103/PhysRevE.59.4326
URI: http://hdl.handle.net/2445/18791
ISSN: 1063-651X
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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