Authors
William R Ketterhagen, Jennifer S Curtis, Carl R Wassgren, Angela Kong, Padma J Narayan, Bruno C Hancock
Publication date
2007/11/1
Journal
Chemical Engineering Science
Volume
62
Issue
22
Pages
6423-6439
Publisher
Pergamon
Description
The segregation of granular materials due to differences in particle properties occurs during a variety of handling and transport processes, such as flow from a hopper. In the present work, the discrete element method (DEM) is used to investigate segregation of granular materials during discharge from a hopper. The effects of various particle properties and hopper geometries on the segregation of a spherical, bidisperse granular material during hopper discharge are studied. Particle contacts are modeled using a soft-particle model consisting of a hysteretic spring system and sliding friction. The effects of the particle diameter ratio, density ratio, fines mass fraction, hopper wall angle, hopper cross-sectional shape, and the initial fill conditions are investigated. These computational results are compared to those from a small experimental system with the same hopper dimensions and particle properties. The use of this …
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Scholar articles
WR Ketterhagen, JS Curtis, CR Wassgren, A Kong… - Chemical Engineering Science, 2007