Mixing and condensation in a wet granular medium

被引：44

作者：

Geromichalos, D ^{[1
]}

Kohonen, MM ^{[1
]}

Mugele, F ^{[1
]}

Herminghaus, S ^{[1
]}

机构：

[1] Univ Ulm, Appl Phys Lab, D-89069 Ulm, Germany

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.90.168702

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied the effect of small amounts of added liquid on the dynamic behavior of a granular system consisting of a mixture of glass beads of two different sizes. Segregation of the large beads to the top of the sample is found to depend in a nontrivial way on the liquid content. A transition to viscoplastic behavior occurs at a critical liquid content, which depends upon the bead size. We show that this transition can be interpreted as a condensation due to the hysteretic liquid bridge forces connecting the beads, and we provide the corresponding phase diagram.

引用

页数：4

共 25 条

[1] Moisture-induced ageing in granular media and the kinetics of capillary condensation [J].