نتایج جستجو برای: modified enskog theory

تعداد نتایج: 1018126  

2005
José Maŕıa Montanero Vicente Garzó Meheboob Alam Stefan Luding

The rheological properties for dilute and moderately dense granular binary mixtures of smooth, inelastic hard disks/spheres under uniform shear flow in steady state conditions are reported. The results are based on the Enskog kinetic theory, numerically solved by a dense gas extension of the Direct Simulation Monte Carlo method for dilute gases. These results are confronted to the ones also obt...

Journal: :journal of solid mechanics 0
m goodarzi department of engineering, college of mechanical engineering, ahvaz branch, islamic azad university, ahvaz, iran m mohammadi department of engineering, college of mechanical engineering, ahvaz branch, islamic azad university, ahvaz, iran m khooran department of mechanical engineering, shahid chamran university of ahvaz, iran f saadi department of engineering, college of mechanical engineering, ahvaz branch, islamic azad university, ahvaz, iran

in this study, the vibration behavior of functional graded (fg) circular and annular nanoplate embedded in a visco-pasternak foundation and coupled with temperature change is studied. the effect of in-plane pre-load and temperature change are investigated on the vibration frequencies of fg circular and annular nanoplate. to obtain the vibration frequencies of the fg circular and annular nanopla...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2003
Moran Wang Zhixin Li

Subsonic nonideal gas flow and heat transfer in micro- and nanochannels for different Knudsen numbers are investigated numerically using the direct simulation Monte Carlo method modified with a consistent Boltzmann algorithm. The van der Waals equation is used as the equation of state. The collision rate is also modified based on the Enskog theory for dense gas. It is shown that the nonideal ga...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1999
V Garzó J W Dufty

The revised Enskog theory for inelastic hard spheres is considered as a model for rapid flow granular media at finite densities. A normal solution is obtained via the Chapman-Enskog method for states near the local homogeneous cooling state. The analysis is performed to first order in the spatial gradients, allowing identification of the Navier-Stokes order transport coefficients associated wit...

2000
JACEK POLEWCZAK GEORGE STELL

A stochastic model of the revised Enskog equation is considered. A choice of the smearing function suggested by the work of Leegwater ([1]) is used to apply the model to the repulsive part of the Lennard-Jones potential and the inverse-power soft-sphere potential. The virial coefficients obtained from the equilibrium properties of the models are in excellent agreement with the known exact coeff...

Journal: :The Journal of chemical physics 2004
James F Lutsko

The kinetic theory for a fluid of hard spheres which undergo endothermic and/or exothermic reactions with mass transfer is developed. The exact balance equations for concentration, density, velocity, and temperature are derived. The Enskog approximation is discussed and used as the basis for the derivation, via the Chapman-Enskog procedure, of the Navier-Stokes reaction equations under various ...

2008
J. Karkowski

The well known domain wall type solutions are nowadays of great physical interest in classical field theory. These solutions can mostly be found only approximatelly. Recently the Hilbert-Chapman-Enskog method was succesfully applied to obtain this type solutions in φ theory. The goal of the present paper is to verify these perturbative results by numerical computations.

1991
Nicola Bellomo Miroslaw Lachowicz J. Polewczak Giuseppe Toscani

mathematical topics in nonlinear kinetic theory ii the enskog equation What to say and what to do when mostly your friends love reading? Are you the one that don't have such hobby? So, it's important for you to start having that hobby. You know, reading is not the force. We're sure that reading will lead you to join in better concept of life. Reading will be a positive activity to do every time...

Journal: :AIP Advances 2021

The shear viscosity of matter and efficient simulating methods in a wide range temperatures densities are desirable. In this study, we present the deep-learning many-body potential (the deep potential) method to reduce computational cost simulations for liquid aluminum at high temperature pressure with accurate results. Viscosities 2.35 g/cm3, 2.7 3.5 4.27 g/cm3 from melting points about 50 000...

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