Particle dynamics in sheared granular matter

被引：233
|
作者：
Losert, W [1 ]
Bocquet, L
Lubensky, TC
Gollub, JP
机构：
[1] Haverford Coll, Dept Phys, Haverford, PA 19041 USA
[2] Univ Penn, Dept Phys, Philadelphia, PA 19104 USA
[3] CNRS, UMR 5672, ENS Lyon, Phys Lab, F-69364 Lyon, France
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 07期
关键词：
D O I：
10.1103/PhysRevLett.85.1428
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The particle dynamics and shear forces of granular matter in a Couette geometry are determined experimentally. The normalized tangential velocity V(y) declines strongly with distance y from the moving wall, independent of the shear rate and of the shear dynamics. Local rms velocity fluctuations delta V(y) scale with the local velocity gradient to the power 0.4 +/- 0.05. These results agree with a locally Newtonian, continuum model, where the granular medium is assumed to behave asa liquid with a local temperature [delta V(y)](2) and density dependent viscosity.
引用
收藏
页码：1428 / 1431
页数：4
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