Surface flow of granular materials: Model and experiments inheap formation

D. V. Khakhar*, Ashish V. Orpe, Peter Andresén, J. M. Ottino

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

89 Scopus citations

Abstract

Granular surface flows are important in industrial practice and natural systems, but the understanding of such flows is at present incomplete. We present a combined theoretical and experimental study of quasi-two-dimensional heap formation by pouring particles continuously at a point. Two cases are considered: open systems and closed systems. Experimental results show that the shear rate in the flowing layer is nearly independent of the mass flow rate, and the angle of static friction at the bed-layer interface increases with flow rate. Predictions of the model for the flowing layer thickness and interface angles are in good agreement with experiments.

Original languageEnglish (US)
Pages (from-to)255-264
Number of pages10
JournalJournal of fluid Mechanics
Volume441
DOIs
StatePublished - Aug 25 2001

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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