Bagnold scaling, density plateau, and kinetic theory analysis of dense granular flow

Namiko Mitarai, Hiizu Nakanishi

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75 Citations (Scopus)

Abstract

We investigate the bulk rheology of dense granular flow down a rough slope, where the density profile has been found to show a plateau except for the boundary layers in simulations [Silbert et al., Phys. Rev. E 64, 051302 (2001)]. It is demonstrated that both the Bagnold scaling and the framework of kinetic theory are applicable in the bulk, which allows us to extract the constitutive relations from simulation data. The detailed comparison of our data with the kinetic theory shows quantitative agreement for the normal and shear stresses, but there exists a slight discrepancy in the energy dissipation, which causes a rather large disagreement in the kinetic theory analysis of the flow.

Original languageEnglish
Article number128001
JournalPhysical Review Letters
Volume94
Issue number12
DOIs
Publication statusPublished - Apr 1 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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