Velocity fields of granular flows down a rough incline: a DEM investigation

被引：10
|
作者：
Lo, C. Y. [1 ]
Bolton, M. D. [1 ]
Cheng, Y. P. [2 ]
机构：
[1] Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England
[2] Univ London Univ Coll, Dept Civil Environm & Geomat Engn, London WC1E 6BT, England
来源：
GRANULAR MATTER | 2010年 / 12卷 / 05期
关键词：
Granular flow; Rheology; Discrete element modelling; SIMULATIONS; SPHERES;
D O I：
10.1007/s10035-010-0212-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper describes a statistical method to explore the velocity profiles of granular flows down rough inclines. Using 3D Discrete Element Method (DEM), granular material is released from a box onto a slope and allowed to flow indefinitely. Fluctuating velocity fields are observed, as particle motions become more dynamic and agitated. Linear regression is used to decompose the fluctuating velocity field into a best-fit velocity profile and a fluctuating component. Analysis shows that the slope inclination has a considerable influence on the rheology, in terms of both the fluctuating velocity and the shear rate of the flow.
引用
收藏
页码：477 / 482
页数：6
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