The single-particle distribution function for rapid granular shear flows of smooth inelastic disks

被引:42
作者
Goldhirsch, I [1 ]
Tan, ML [1 ]
机构
[1] PRINCETON UNIV, FLUID DYNAM RES CTR, PRINCETON, NJ 08544 USA
关键词
D O I
10.1063/1.868951
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The velocity distribution function, f(1), for a (linear) shear flow of a system of rigid inelastically colliding disks in a plane is measured by applying a novel algorithm to results of (MD) simulations involving 200 000 particles. The need to consider such a relatively large system is explained. It is found that f(1) is well fitted by an exponent of a second-order polynomial in the norm of the fluctuating velocities with angle-dependent coefficients (which also depend on the density and the granular temperature). Other characterizations of the system studied in this paper are presented as background material. A hitherto unnoticed property of systems with Lees-Edwards boundary conditions has been discovered and its origin is briefly explained. (C) 1996 American Institute of Physics.
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收藏
页码:1752 / 1763
页数:12
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