Long-time tails for sheared fluids

被引：19
|
作者：
Otsuki, Michio [1 ]
Hayakawa, Hisao [2 ]
机构：
[1] Aoyama Gakuin Univ, Dept Math & Phys, Kanagawa 2298558, Japan
[2] Kyoto Univ, Yukawa Inst Theoret Phys, Sakyo Ku, Kyoto 6068502, Japan
来源：
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT | 2009年
关键词：
granular matter; hydrodynamic fluctuations; rheology and transport properties; molecular dynamics; VELOCITY AUTOCORRELATION FUNCTION; SELF-DIFFUSION; FLOWS; DECAY;
D O I：
10.1088/1742-5468/2009/08/L08003
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The long-time behavior of the velocity autocorrelation function (VACF) for sheared fluids is investigated theoretically and numerically. The existence is found of cross-overs of the VACF from t(-d/2) to t(-d) in sheared fluids of elastic particles without any thermostat, and from t(-d/2) to t(-(d+2)/2) in both sheared fluids of elastic particles with a thermostat and sheared granular fluids, where d is the spatial dimension. The validity of the predictions has been confirmed by our numerical simulations.
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页数：8
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