DENSITY WAVES AND 1/F DENSITY-FLUCTUATIONS IN GRANULAR FLOW

被引：55

作者：

PENG, GW ^{[1
]}

HERRMANN, HJ ^{[1
]}

机构：

[1] ACAD SINICA, INST PHYS, BEIJING 100080, PEOPLES R CHINA

来源：

PHYSICAL REVIEW E | 1995年 / 51卷 / 03期

关键词：

D O I：

10.1103/PhysRevE.51.1745

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：

We simulate granular flow in a narrow pipe with a lattice-gas automaton model. We find that the density in the system is characterized by two features. One is that spontaneous density waves propagate through the system with well-defined shapes and velocities. The other is that density waves are distributed so as to make the power spectra of density fluctuations vary as 1/fα noise. Three important parameters make these features observable; they are energy dissipation, average density, and the roughness of the pipe walls. © 1995 The American Physical Society.

引用

页码：1745 / 1756

页数：12