PMID: 11308834Apr 20, 2001Paper

Statistical mechanics of fluidized granular media: short-range velocity correlations

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
Rodrigo Soto, M Mareschal

Abstract

A statistical mechanical study of fluidized granular media is presented. Using a special energy injection mechanism, homogeneous fluidized stationary states are obtained. Molecular dynamics simulations and theoretical analysis of the inelastic hard-disk model show that there is a large asymmetry in the two-particle distribution function between pairs that approach and separate. Large velocity correlations appear in the postcollisional states due to the dissipative character of the collision rule. These correlations can be well-characterized by a state dependent pair correlation function at contact. It is also found that velocity correlations are present for pairs that are about to collide. Particles arrive at collisions with a higher probability that their velocities are parallel rather than antiparallel. These dynamical correlations lead to a decrease of the pressure and of the collision frequency as compared to their Enskog values. A phenomenological modified equation of state is presented.

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Citations

Dec 20, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Masaharu Isobe
Jul 13, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J Javier BreyF Moreno
Feb 28, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Dino Risso, Patricio Cordero
Aug 27, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Vicente Garzó
Nov 28, 2019·Physical Review. E·Yanpei Chen, Wei Wang
Sep 27, 2018·Physical Review. E·Dino RissoMarcelo Guzmán
Sep 21, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·E Ben-Naim, P L Krapivsky
Oct 3, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·S J MoonJ B Swift
Jan 7, 2003·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·James F Lutsko
Oct 4, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·James F Lutsko
Oct 13, 2007·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Vicente GarzóChristine M Hrenya
Jun 21, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·J F Lutsko
Jun 13, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·James W DuftyJames Lutsko
Jun 29, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Dana Levanony, Dov Levine
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Jun 13, 2002·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·James LutskoJames W Dufty
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Oct 4, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Vicente Garzó
Dec 12, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A Santos, J W Dufty

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