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A note on the upward and downward intruder segregation in granular media

L. Trujillo·H. J. Herrmann
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Abstract

The intruder segregation dependence on size and density is investigated in the framework of a hydrodynamic theoretical model for vibrated granular media. We propose a segregation mechanism based on the difference of densities between different regions of the granular system, which give origin to a buoyant force that acts on the intruder. From the analytic solution of the segregation velocity we can analyze the transition from the upward to downward intruder's movement.

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L. Trujillo, H. J. Herrmann. 2002-11-20. A note on the upward and downward intruder segregation in granular media. https://arxiv.org/abs/cond-mat/0211435

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