Numerical study of free-fall arches in hopper flows

P. Lin, Stephen Zhang, J. Qi, Y.M. Xing and L. Yang

Physica A: Statistical Mechanics and its Applications, 2015, vol. 417, issue C, 29-40

Abstract: Beverloo’s law describes the flow rate of grains discharging from hoppers, where the assumption of a free-fall arch (FFA) is very useful in understanding the physical picture of this process. The FFA has been observed in previous experiments but a clear systematic study of the FFA is still necessary. In this paper, dense granular flow in hoppers was studied by numerical simulations, in attempts to explore the free-fall region and its boundary. Generally, the numerical simulation results support the free-fall arch assumption, although the statistical description of the FFA is not exactly equivalent to its strict definition.

Keywords: Free-fall arch; Discrete element method; Hopper flow; Granular materials; GPU (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:417:y:2015:i:c:p:29-40

DOI: 10.1016/j.physa.2014.09.032

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