Granular Matter

, Volume 12, Issue 5, pp 477–482

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

Article

DOI: 10.1007/s10035-010-0212-9

Cite this article as:
Lo, C.Y., Bolton, M.D. & Cheng, Y.P. Granular Matter (2010) 12: 477. doi:10.1007/s10035-010-0212-9

Abstract

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.

Keywords

Granular flowRheologyDiscrete element modelling

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Department of EngineeringUniversity of CambridgeCambridgeUnited Kingdom
  2. 2.Department of Civil, Environmental and Geomatic EngineeringUniversity College LondonLondonUnited Kingdom