Formation and transportation of sand-heap in an inclined and vertically vibrated container

Details Formation and transportation of sand-heap in an inclined and vertically vibrated container Formation and transportation of sand-heap in an inclined and vertically vibrated container

2005-11-29

arxiv.org/abs/cond-mat/0511693v1

Physics

Condensed Matter

Soft Condensed Matter

9 pages, 5 figures, submitted to PRE

Scientific paper

10.1103/PhysRevE.74.021304

We report the experimental findings of formation and motion of heap in granular materials in an inclined and vertically vibrated container. We show experimentally how the transport velocity of heap up container is related to the driving acceleration as well as the driving frequency of exciter. An analogous experiment was performed with a heap-shaped Plexiglas block. We propose that cohesion force resulted from pressure gradient in ambient gas plays a crucial role in enhancing and maintaining a heap, and ratchet effect causes the movement of the heap. An equation which governs the transport velocity of the heap is presented.

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