Dynamics of axial segregation and coarsening of dry granular materials and slurries in circular and square tubes

被引：68

作者：

Fiedor, SJ ^{[1
]}

Ottino, JM ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem Engn, Evanston, IL 60208 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.91.244301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study segregation and coarsening dynamics of dry granular materials and slurries in tubes with circular and square cross sections. Space-time plots show key differences between the four cases, including band splitting and wave formation, depending upon the rotational speed. However, the fraction of the surface occupied by bands of small-rich particles is nearly constant in all experiments, leading to quasi-1D behavior, and the rate of coarsening, when it occurs, is logarithmic in all cases. Coarsening rates are very similar except in the case with the longest development time.

引用

页数：4

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