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Van Noije, T. P. C. ; Ernst, M. H. ; Brito, Ricardo ; García Orza, José Antonio | American Physical Society | 1997-07-21Using 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) be[...]texto impreso
García Orza, José Antonio ; Brito, Ricardo ; Van Noije, T. P. C. ; Ernst, M. H. | 1997-08An initially homogeneous freely evolving fluid of inelastic hard spheres develops inhomogeneities in the dow field u(r, t) (vortices) and in the density held n(r, t) (clusters), driven by unstable fluctuations, delta a = {delta n, delta u}. Thei[...]texto impreso
The dynamics of inelastic hard spheres is described in terms of the binary collision expansion, yielding the corresponding pseudo-liouville equation and BBGKY hierarchy for the reduced distribution functions. Based on cluster expansion technique[...]texto impreso
Van Noije, T. P. C. ; Ernst, M. H. ; Brito, Ricardo | 1998-05The clustering instability in freely evolving granular fluids manifests itself in the density-density correlation function and structure factor. These functions are calculated from fluctuating hydrodynamics. As time increases, the structure fact[...]
