Numerical investigation of unsteady state hopper flow

H. P. Zhu, A. B. Yu

Research output: Contribution to conferencePaper


This paper presents a numerical study of the unsteady state granular flow in a cylindrical hopper with flat bottom by means of the discrete element method. The distributions of the physical properties including velocity, force and stress are investigated qualitatively or quantitatively. It is shown that this flow has four different flow zones, in which these distributions are different. At different discharging times, the trends of the characteristics are similar, but their magnitudes different. The results also show that the trends of the unsteady and steady state hopper flows in terms of velocity, force and stress are similar. But, quantitatively, there are differences in these physical properties for the two flows.

Original languageEnglish
Publication statusPublished - 1 Dec 2006
Externally publishedYes
EventWorld Congress on Particle Technology (WCPT) 2006 - Orlando, United States of America
Duration: 23 Apr 200627 Apr 2006
Conference number: 5th


ConferenceWorld Congress on Particle Technology (WCPT) 2006
Abbreviated titleWCPT 2006
Country/TerritoryUnited States of America


  • Discrete element method
  • Granular matter
  • Hopper flow

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