Simulation of density segregation in vibrated beds


Zeilstra, C. and Hoef, M.A. van der and Kuipers, J.A.M. (2008) Simulation of density segregation in vibrated beds. Physical Review E: Statistical, nonlinear, and soft matter physics, 77 (3). 031309. ISSN 1539-3755

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Abstract:We have investigated by numerical simulation the density segregation of fine equal-sized bronze and glass particles subject to vertical vibrations. The model was found to be capable of predicting the two main segregation forms (“bronze on top” and “sandwich”) in roughly the same regions of the phase diagram as was found experimentally by Burtally et al. We investigated the effects of pressure air forcing, friction and restitution of kinetic energy in collisions, and box size on the segregation behavior. We find that next to the interstitial air friction also has a large influence on the formation of the sandwich structure.
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Copyright:© 2008 American Physical Society
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