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

被引：0

作者：

C. Y. Lo

M. D. Bolton

Y. P. Cheng

机构：

[1] University of Cambridge,Department of Engineering

[2] University College London,Department of Civil, Environmental and Geomatic Engineering

来源：

Granular Matter | 2010年 / 12卷

关键词：

Granular flow; Rheology; Discrete element modelling;

D O I：

暂无

中图分类号：

学科分类号：

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

页码：477 / 482

页数：5

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