Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Ruiz-Montero P. J."'
The formulation of the First and Second Principles of thermodynamics for a particle in contact with a heat bath and submitted to an external force is analyzed, by means of the Boltzmann-Lorentz kinetic equation. The possible definitions of the thermo
Externí odkaz:
http://arxiv.org/abs/1712.01017
The self-diffusion coefficient of a granular gas in the homogeneous cooling state is analyzed near the shearing instability. Using mode-coupling theory, it is shown that the coefficient diverges logarithmically as the instability is approached, due t
Externí odkaz:
http://arxiv.org/abs/1507.00134
Autor:
Brey, J. Javier, Ruiz-Montero, M. J.
The hydrodynamic part of the velocity autocorrelation function of a granular fluid in the homogeneous cooling state has been calculated by using mode-coupling theory for a finite system with periodic boundary conditions. The existence of the shearing
Externí odkaz:
http://arxiv.org/abs/1501.04757
Publikováno v:
Phys. Rev. Lett. 112, 180602 (2014)
We construct a novel class of exact solutions to the Boltzmann equation, in both its classical and quantum formulation, for arbitrary collision laws. When the system is subjected to a specific external forcing, the precise form of which is worked out
Externí odkaz:
http://arxiv.org/abs/1404.0502
Autor:
Brey, J. Javier, Ruiz-Montero, M. J.
A granular gas composed of inelastic hard spheres or disks in the homogeneous cooling state is considered. Some of the particles are labeled and their number density exhibits a time-independent linear profile along a given direction. As a consequence
Externí odkaz:
http://arxiv.org/abs/1311.5139
Autor:
Brey, J. Javier, Ruiz-Montero, M. J.
Publikováno v:
EPL, Vol. 103, 30010 (2013)
A steady self-diffusion process in a gas of hard spheres at equilibrium is analyzed. The system exhibits a constant gradient of labeled particles. Neither the concentration of these particles nor its gradient are assumed to be small. It is shown that
Externí odkaz:
http://arxiv.org/abs/1309.4683
Autor:
Brey, J. Javier, Ruiz-Montero, M. J.
The shearing instability of a dilute granular mixture composed of smooth inelastic hard spheres or disks is investigated. By using the Navier-Stokes hydrodynamic equations, it is shown that the scaled transversal velocity mode exhibits a divergent be
Externí odkaz:
http://arxiv.org/abs/1302.4585
Autor:
Brey, J. Javier, Ruiz-Montero, M. J.
A peculiarity of the hydrodynamic Navier-Stokes equations for a granular gas is the modification of the Fourier law, with the presence of an additional contribution to the heat flux that is proportional to the density gradient. Consequently, the cons
Externí odkaz:
http://arxiv.org/abs/1208.2830
Autor:
Brey, J. Javier, Ruiz-Montero, M. J.
The volume fluctuations in the steady state reached by a vibrated granular gas of hard particles confined by a movable piston on the top are investigated by means of event driven simulations. Also, a compressibility factor, measuring the response in
Externí odkaz:
http://arxiv.org/abs/1002.0542
Autor:
Brey, J. Javier, Ruiz-Montero, M. J.
The influence of the heating mechanism on the kinetic energy densities of the components of a vibrated granular mixture is investigated. Collisions of the particles with the vibrating wall are inelastic and characterized by two coefficients of normal
Externí odkaz:
http://arxiv.org/abs/0910.0354