Buscar
Mostrando ítems 11-20 de 28
Artículo
Breakdown of the fluctuation-dissipation relations in granular gases
(IOP Publishing Ltd., 2008-10)
A numerical molecular dynamics experiment measuring the two-time correlation function of the transversal velocity field in the homogeneous cooling state of a granular gas modeled as an ensemble of inelastic hard particles ...
Artículo
Fluctuations in the uniform shear flow state of a granular gas
(Institute of Physics Publishing, 2014)
Using kinetic theory we analyse the fluctuations of the total internal energy of a granular gas under stationary uniform shear flow, and find that they are coupled to fluctuations in the different components of the total ...
Artículo
The Enskog Equation for Confined Elastic Hard Spheres
(Springer Nature, 2018)
A kinetic equation for a system of elastic hard spheres or disks confined by a hard wall of arbitrary shape is derived. It is a generalization of the modified Enskog equation in which the effects of the confinement are ...
Artículo
Scaling and universality of critical fluctuations in granular gases
(American Physical Society, 2005-03-11)
The total energy fluctuations of a low-density granular gas in the homogeneous cooling state near the threshold of the clustering instability are studied by means of molecular dynamics simulations. The relative dispersion ...
Artículo
Memory effects in the relaxation of a confined granular gas
(American Physical Society, 2014)
The accuracy of a model to describe the horizontal dynamics of a confined quasi-two-dimensional system of inelastic hard spheres is discussed by comparing its predictions for the relaxation of the temperature in a homogenous ...
Artículo
Energy fluctuations in the homogeneous cooling state of granular gases
(American Physical Society, 2004)
Starting from the hierarchy of equations for microscopic densities in phase space, a general theory for fluctuations and correlations in a dilute granular gas of hard particles is developed. Then, the particular case ...
Artículo
Boltzmann kinetic equation for a strongly confined gas of hard spheres
(American Physical Society, 2017)
A Boltzmann-like kinetic equation for a quasi-two-dimensional gas of hard spheres is derived. The system is confined between two parallel hard plates separated a distance between one and two particle diameters. An entropy ...
Artículo
Inhomogeneous cooling state of a strongly confined granular gas at low density
(American Physical Society, 2019)
The inhomogeneous cooling state describing the hydrodynamic behavior of a freely evolving granular gas strongly confined between two parallel plates is studied, using a Boltzmann kinetic equation derived recently. By ...
Artículo
Homogeneous dynamics in a vibrated granular monolayer
(Institute of Physics Publishing, 2019)
A simple model of a vibrated granular monolayer is studied. It consists of inelastic hard spheres confined between two parallel hard plates separated at a distance smaller than twice the diameter of the particles. Both ...
Artículo
Fluctuating Navier-Stokes equations for inelastic hard spheres or disks
(American Physical Society, 2011)
Starting from the fluctuating Boltzmann equation for smooth inelastic hard spheres or disks, closed equations for the fluctuating hydrodynamic fields to Navier-Stokes order are derived. This requires deriving constitutive ...