Reversing granular flow on a vibratory conveyor

Grochowski, R.; Walzel, P.; Rouijaa, M.; Kruelle, C.A.; Rehberg, I.
February 2004
Applied Physics Letters;2/9/2004, Vol. 84 Issue 6, p1019
Academic Journal
Experimental results are presented for the transport properties of granular materials on a vibratory conveyor. For circular oscillations of the shaking trough nonmonotonous dependence of the transport velocity on the normalized acceleration Γ is observed. Two maxima are separated by a regime where the granular flow is much slower and, in a certain driving range, even reverses its direction. Similar behavior is found for a single solid body with a low coefficient of restitution, whereas an individual glass bead of 1 mm diameter is propagated in the same direction for all accelerations. © 2004 American Institute of Physics.


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