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Modeling segregation of polydisperse granular materials in hopper discharge

Size segregation of polydisperse materials during hopper discharge is problematic in various industrial situations. However, due to the complexity of hopper discharge flow kinematics and limited prediction techniques for polydisperse segregation, accurate modeling of polydisperse segregation during...

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Bibliographic Details
Published in:Powder technology 2020-09, Vol.374, p.389-398
Main Authors: Deng, Zhekai, Fan, Yi, Theuerkauf, Jörg, Jacob, Karl V., Umbanhowar, Paul B., Lueptow, Richard M.
Format: Article
Language:English
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Summary:Size segregation of polydisperse materials during hopper discharge is problematic in various industrial situations. However, due to the complexity of hopper discharge flow kinematics and limited prediction techniques for polydisperse segregation, accurate modeling of polydisperse segregation during hopper discharge has been challenging. We extend the application of a general predictive continuum model that captures the effects of segregation, diffusion, and advection to polydisperse hopper flow. Model predictions of segregation within the hopper and the average particle diameter during discharge match experimentally validated discrete element method simulations and experiments. [Display omitted] •A continuum model for polydisperse segregation of hopper discharge flow is developed.•Predictions of the model match discrete element simulations for varying initial conditions of the hopper.•Model predictions also agree well with experimental results.
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2020.06.065