SHEAR VISCOSITY VIA GLOBAL CONTROL OF SPATIOTEMPORAL CHAOS IN 2-DIMENSIONAL ISOENERGETIC DENSE FLUIDS

被引:31
作者
HOOVER, WG
POSCH, HA
机构
[1] LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94551
[2] UNIV VIENNA,INST EXPTL PHYS,A-1090 VIENNA,AUSTRIA
来源
PHYSICAL REVIEW E | 1995年 / 51卷 / 01期
关键词
D O I
10.1103/PhysRevE.51.273
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We control the chaotic large-scale spatiotemporal fluctuations inherent in large-scale two-dimensional nonequilibrium flows by using global ergostats. We use isoenergetic nonequilibrium molecular dynamics to characterize the size dependence of both the shear viscosity and the largest Lyapunov exponent for two-dimensional globally controlled dense periodic fluids. Though uncontrolled fluctuations in such flows have often been thought to lead to divergent transport coefficients in two dimensions, our numerical evidence shows instead that the large-system "thermodynamic limit" can be extended to a convergent homogeneous "hydrodynamic limit" away from equilibrium, with finite transport coefficients, even in two dimensions. © 1995 The American Physical Society.
引用
收藏
页码:273 / 279
页数:7
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