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Artículo
Rheological effects in the linear response and spontaneous fluctuations of a sheared granular gas
(American Physical Society, 2012)
The decay of a small homogeneous perturbation in the temperature of a dilute granular gas in the steady uniform shear flow state is investigated. Using kinetic theory based on the inelastic Boltzmann equation, a ...
Artículo
Thermally driven escape over a barrier of arbitrary shape
(AIP Publishing, 1999)
The Kramers theory for the thermally activated rate of escape of a Brownian particle from a potential well is extended to a barrier of arbitrary shape. The extension is based on an approximate solution of the underlying ...
Artículo
Hydrodynamics of an open vibrated granular system
(American Physical Society, 2001)
Using the hydrodynamic description and molecular dynamics simulations, the steady state of a fluidized granular system in the presence of gravity is studied. For an open system, the density profile exhibits a maximum, ...
Artículo
Hydrodynamic character of the nonequipartition of kinetic energy in binary granular gases
(American Physical Society, 2009)
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 ...
Artículo
Steady uniform shear flow in a low density granular gas
(American Physical Society, 1997)
The steady uniform shear flow of a low density granular sytem is studied by means of a kinetic model equation and also by direct Monte Carlo simulation of the Boltzmann equation. The former can be exactly solved for arbitrary ...
Artículo
Homogeneous hydrodynamics of a collisional model of confined granular gases
(American Physical Society, 2014)
The hydrodynamic equation governing the homogeneous time evolution of the temperature in a model of confined granular gas is studied by means of the Enskog equation. The existence of a normal solution of the kinetic equation ...
Artículo
Resonant activation in a simple kinetic model
(American Physical Society, 1994)
We present a very simple Markovian kinetic model displaying a stochastic resonant behavior which is similar to the one found in the escape of a particle over a fluctuating potential barrier. The basic mechanism that is ...
Artículo
Dynamics and steady state of a vibrated granular binary mixture model
(IOP Publishing Ltd., 2003-10)
A model for the dynamical evolution of a granular binary mixture is analyzed. This system is submitted to a tapping procedure, similarly to what is done in real experiments. In the weak vibration limit, an effective dynamics ...
Ponencia
Heat flux in a vibrated granular gas: the diffusive heat conductivity coefficient
(AIP Publishing, 2005)
The transport coefficient coupling heat flux and density gradient in a granular gas is measured by taking advantage of the existence of a minimum in the temperature profile of an open vibrated granular medium. This temperature ...
Artículo
Mesoscopic theory of critical fluctuations in isolated granular gases
(American Physical Review, 2006-05-12)
Fluctuating hydrodynamics is used to describe the total energy fluctuations of a freely evolving gas of inelastic hard spheres near the threshold of the clustering instability. They are shown to be governed only by vorticity ...