Density profiles of loose and collapsed cohesive granular structures generated by ballistic deposition

被引：18
作者：
Kadau, Dirk [1 ]
Herrmann, Hans J. [1 ]
机构：
[1] ETH, Inst Bldg Mat, CH-8093 Zurich, Switzerland
来源：
PHYSICAL REVIEW E | 2011年 / 83卷 / 03期
关键词：
CAKE FORMATION; COMPRESSION; FILTRATION; DYNAMICS; POROSITY; DRY;
D O I：
10.1103/PhysRevE.83.031301
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Loose granular structures stabilized against gravity by an effective cohesive force are investigated on a microscopic basis using contact dynamics. We study the influence of the granular Bond number on the density profiles and the generation process of packings, generated by ballistic deposition under gravity. The internal compaction occurs discontinuously in small avalanches and we study their size distribution. We also develop a model explaining the final density profiles based on insight about the collapse of a packing under changes of the Bond number.
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页数：13
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