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arXiv · 1410.4335

Anisotropy of Weakly Vibrated Granular Flows

Geert Wortel·Martin van Hecke
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Abstract

We experimentally probe the anisotropy of the fabric of weakly vibrated, flowing granular media. Depending on the driving parameters --- flow rate and vibration strength --- this anisotropy varies significantly. We show how the anisotropy collapses when plotted as function of the driving stresses, uncovering a direct link between stresses and anisotropy. Moreover, our data suggests that for small anisotropies, the shear stresses vanish. Anisotropy of the fabric of granular media thus plays a crucial role in determining the rheology of granular flows.

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Geert Wortel, Martin van Hecke. 2014-10-16. Anisotropy of Weakly Vibrated Granular Flows. https://doi.org/10.1103/physreve.92.040201

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