MIXING OF A GRANULAR MATERIAL IN A BIDIMENSIONAL ROTATING DRUM

被引：110

作者：

CLEMENT, E

RAJCHENBACH, J

DURAN, J

机构：

[1] Laboratoire d Acoustique et d’Optique de la Matière Condensée, Paris, 75005, URA 800 Université P. et M. Curie - 4, Place Jussieu

来源：

EUROPHYSICS LETTERS | 1995年 / 30卷 / 01期

关键词：

D O I：

10.1209/0295-5075/30/1/002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report experimental measurements on the mixing properties of a powder. We study a 2D model granular medium confined in a half-filled rotating drum. Using an image-processing device, we follow the trajectories of tracer particles in a monodisperse assembly of beads. Tracer particles with different size ratios exhibit a violent segregation effect: a smaller particle has a tendency to stay in the centre and a larger one will rather dwell on the edges. Furthermore, for a tracer of identical size, we evidence a specific dispersion property where the centre and the edges are competing attractors of the mixing dynamics.

引用

页码：7 / 12

页数：6

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