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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Trujillo, L., Herrmann, H. A note on the upward and downward intruder segregation in granular media. GM 5, 85–89 (2003). https://doi.org/10.1007/s10035-003-0128-8
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DOI: https://doi.org/10.1007/s10035-003-0128-8