Volume 82, Number 3, May 2008
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||23 April 2008|
Flow of a particle along a rotating wall
Cemagref, UR TSCF Technologies et Systèmes d'Information pour les agrosystèmes, Domaine des Palaquins Varennes-sur-Allier, F-03150, France, EU
Corresponding author: email@example.com
Accepted: 13 March 2008
We study numerically and theoretically the flow of a particle along a rotating wall considering a viscoelastic interaction law. A typical trajectory of the particle along the wall consists in a first phase of successive jumps followed by a second phase of permanent contacts along the wall. We show in particular that there exists a critical friction coefficient between the particle and the wall for which the particle can roll without any sliding in the second phase. This critical friction coefficient appears to depend only on the normal coefficient of restitution of the particle. We examine also the influence of the rebounds in the flow of the particle. We give a physical interpretation of these effects.
PACS: 45.50.-j – Dynamics and kinematics of a particle and a system of particles / 45.70.Mg – Granular flow: mixing, segregation and stratification / 87.15.A- – Theory, modeling, and computer simulation
© EPLA, 2008
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