Density Patterns in Granular Media

Details Density Patterns in Granular Media Density Patterns in Granular Media

1993-02-02

arxiv.org/abs/cond-mat/9302005v1

Physics

Condensed Matter

7 pages, plain TeX

Scientific paper

Recent experiments by Baxter et al. showed the existence of density waves in
granular material flowing out of a hopper. We show, using Molecular Dynamics
Simulations, that this effect is a consequence of static friction and find that
these density fluctuations follow a $1/f$ spectrum. The effect is enhanced when
the opening angle of the hopper decreases.

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