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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 thermodynamics |
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 |
URI: | http://hdl.handle.net/2445/18791 |
Related resource: | http://dx.doi.org/10.1103/PhysRevE.59.4326 |
ISSN: | 1063-651X |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
Files in This Item:
File | Description | Size | Format | |
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507887.pdf | 346.3 kB | Adobe PDF | View/Open |
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