Gravity-driven Dense Granular Flows

Details Gravity-driven Dense Granular Flows Gravity-driven Dense Granular Flows

2000-05-02

arxiv.org/abs/cond-mat/0005051v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, RevTeX 3.0, 4 PostScript figures (5 files) embedded with epsf

Scientific paper

10.1209/epl/i2001-00508-7

We report and analyze the results of numerical studies of dense granular flows in two and three dimensions, using both linear damped springs and Hertzian force laws between particles. Chute flow generically produces a constant density profile that satisfies scaling relations suggestive of a Bagnold grain inertia regime. The type of force law has little impact on the behavior of the system. Bulk and surface flows differ in their failure criteria and flow rheology, as evidenced by the change in principal stress directions near the surface. Surface-only flows are not observed in this geometry.

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