Mesoscopic theory of granular fluids



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Van Noije, T. P. C. and Ernst, M. H. and Brito, Ricardo and García Orza, José Antonio (1997) Mesoscopic theory of granular fluids. Physical Review Letters, 79 (3). pp. 411-414. ISSN 0031-9007

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Using fluctuating hydrodynamics we describe the slow buildup of long range spatial correlations in a freely evolving fluid of inelastic hard spheres. In the incompressible limit, the behavior of spatial velocity correlations (including r^(-d) behavior) is governed by vorticity fluctuations only and agrees well with two-dimensional simulations up to 50 to 100 collisions per particle. The incompressibility assumption breaks down beyond a distance that diverges in the elastic limit.

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© 1997 The American Physical Society. The authors wish to thank H. J. Bussemaker, D. Frenkel, M. Hagen, and W. v. d. Water for helpful comments and discussions. T. v. N. acknowledges support of the foundation “Fundamenteel Onderzoek der Materie (FOM),” which is financially supported by the Dutch National Science Foundation (NWO). R. B. acknowledges support from DGICYT (Spain) No. PB94-0265.

Subjects:Sciences > Physics > Thermodynamics
ID Code:21560
Deposited On:24 Jun 2013 14:17
Last Modified:24 Jul 2018 11:05

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