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VELOCITY FIELDS OF GRANULAR FLOWS DOWN A ROUGH INCLINE: A DEM INVESTIGATION (2010)
This paper describes a statistical method to explore the velocity profiles of granular flows down rough inclines. Using 3D Discrete Element Method (DEM), granularmaterial 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.
Granular Matter (2010) 12:477–482, Springer