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Mostrando ítems 101-110 de 110
Artículo
Cooling rates and energy partition in inhomogeneous fluidized granular mixtures
(American Physical Society, 2011)
The local cooling rates of the components of a vibrated binary granular mixture in a steady state are investigated. The accuracy of the expression obtained by assuming a local homogeneous cooling state distribution of the ...
Artículo
High energy tail in the velocity distribution of a granular gas
(American Physical Society, 1999)
The Enskog-Boltzmann equation for a homogeneous freely evolving system of smooth hard disks colliding inelastically is solved by means of the direct simulation Monte Carlo method. The distribution function shows an exponential ...
Artículo
Practical kinetic model for hard sphere dynamics
(American Physical Society, 1996-08-12)
The revised Enskog theory for a classical system of hard spheres provides a unified description of both fluid and crystal states over a wide range of densities and wavelengths. However, practical applications of this theory ...
Artículo
Energy partition and segregation for an intruder in a vibrated granular system under gravity
(American Physical Society, 2005-08-26)
The difference of temperatures between an impurity and the surrounding gas in an open vibrated granular system is studied. It is shown that, in spite of the high inhomogeneity of the state, the temperature ratio remains ...
Artículo
Kinetic Theory of a Confined Quasi-Two-Dimensional Gas of Hard Spheres
(MDPI, 2017-02)
The dynamics of a system of hard spheres enclosed between two parallel plates separated a distance smaller than two particle diameters is described at the level of kinetic theory. The interest focuses on the behavior of ...
Artículo
Simulation study of the Green-Kubo relations for dilute granular gases
(American Physical Society, 2004)
The Green-Kubo relations for dilute granular gases are employed to compute their transport coefficients by means of the direct simulation Monte Carlo method. This requires not only to follow the dynamics of the system, but ...
Artículo
Analysis of the Evans and Baranyai variational principle in dilute gases
(American Physical Society, 1993)
A variational principle for thermostated nonequilibrium steady states recently proposed by Evans and Baranyai [Phys. Rev. Lett. 67, 2597 (1991)] is analyzed by means of a model kinetic equation for dilute gases. It is shown ...
Artículo
Heat flux and upper boundary condition in an open fluidized granular gas
(IOP Publishing Ltd., 2004-06-15)
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 system. The results ...
Artículo
Kinetic model for a confined quasi-two-dimensional gas of inelastic hard spheres
(Institute of Physics Publishing, 2020)
The local balance equations for the density, momentum, and energy of a dilute gas of elastic or inelastic hard spheres, strongly confined between two parallel hard plates are obtained. The starting point is a Boltzmann-like ...
Artículo
On the Validity of a Variational Principle for Far-from-Equilibrium Steady States
(IOP Publishing Ltd., 1995-03-20)
It is shown that an exact solution of the non-linear Boltzmann equation does not verify the variational principle for non-equilibrium steady states proposed by Evans and Baranyai (Phys. Rev. Lett., 67 (1991) 2597). Therefore, ...