Cluster formation due to collisions in granular material

被引：211

作者：

Kudrolli, A ^{[1
]}

Wolpert, M ^{[1
]}

Gollub, JP ^{[1
]}

机构：

[1] UNIV PENN, DEPT PHYS, PHILADELPHIA, PA 19104 USA

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.78.1383

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The role of inelastic collisions in granular hydrodynamics is studied experimentally in a two dimensional system of spherical particles rolling on a smooth surface and driven by a moving wall. Clusters form at high particle densities; the velocity distribution is narrowed, and the collision rate is enhanced within the clusters. The clusters migrate downward in the presence of a very slight tilt, but are not dispersed. A one dimensional model captures the effect of gravitation on the observed statistical distributions.

引用

页码：1383 / 1386

页数：4

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