DENSITY PATTERNS IN 2-DIMENSIONAL HOPPERS

被引：55

作者：

RISTOW, GH ^{[1
]}

HERRMANN, HJ ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH,HOCHSTLEISTUNGSRECHENZENTRUM,D-52425 JULICH,GERMANY

来源：

PHYSICAL REVIEW E | 1994年 / 50卷 / 01期

关键词：

D O I：

10.1103/PhysRevE.50.R5

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：

Recent experiments by Baxter et al. [Phys. Rev. Lett. 62, 2825 (1989)) showed the existence of density waves in granular material flowing out of a hopper. We show, using molecular dynamics simulations, that this effect is a consequence of static friction and find that these density fluctuations follow a 1/f(alpha) spectrum. The effect is enhanced when the opening angle of the hopper decreases.

引用

页码：R5 / R8

页数：4

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