DEM simulation of granular flows on a heap

Shimin Wu, Haiping Zhu, Aibing Yu, Alain de Ryck, Paul Zulli

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Abstract

Flow of granular material on a heap is numerically investigated using the discrete element method. Experiments are carried out to validate the numerical model. The flow profiles of the surface granular flow and the creep motion of particles in the heap are studied. It is shown that the mean velocity of the surface flow exhibits a linear relationship with depth, while that of the creep motion in the heap decays exponentially with depth and the characteristic length of the decay is on the order of the particle size. The existence of the creep motion can be attributed to the variation of the porosity distribution of the heap. The granular flow on frozen static heap is also investigated to understand the effect of the creep motion on the surface flow.
Original languageEnglish
Title of host publicationPowders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media
EditorsMasami Nakagawa, Stefan Luding
Place of PublicationMelville NY USA
PublisherAmerican Institute of Physics
Pages621 - 624
Number of pages4
Volume1142
ISBN (Print)9780735406827
DOIs
Publication statusPublished - 2009
Externally publishedYes
EventPowders and Grains 2009 - Golden CO USA, Golden, United States of America
Duration: 13 Jul 200917 Jul 2009
Conference number: 6th

Conference

ConferencePowders and Grains 2009
CountryUnited States of America
CityGolden
Period13/07/0917/07/09

Cite this

Wu, S., Zhu, H., Yu, A., de Ryck, A., & Zulli, P. (2009). DEM simulation of granular flows on a heap. In M. Nakagawa, & S. Luding (Eds.), Powders and Grains 2013: Proceedings of the 7th International Conference on Micromechanics of Granular Media (Vol. 1142, pp. 621 - 624). American Institute of Physics. https://doi.org/10.1063/1.3180003