Modeling segregation of polydisperse granular materials in hopper discharge

Zhekai Deng, Yi Fan, Jörg Theuerkauf, Karl V. Jacob, Paul B. Umbanhowar, Richard M. Lueptow*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish (US)
Pages (from-to)389-398
Number of pages10
JournalPowder Technology
StatePublished - Sep 2020


  • Continuum model
  • Hopper discharge
  • Segregation

ASJC Scopus subject areas

  • Chemical Engineering(all)

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