Reversal of a granular flow on vibratory conveyors

Titelangaben

Kruelle, Christof A. ; Rouijaa, Mustapha ; Götzendorfer, Andreas ; Rehberg, Ingo ; Grochowski, Rafal ; Walzel, Peter ; El hor, Hamid ; Linz, Stefan J.:
Reversal of a granular flow on vibratory conveyors.
In: Garcia-Rojo, R. ; Herrmann, H. J. ; McNamara, Sean (Hrsg.): Powders and Grains 2005 : Proceedings of the International Conference on Powders & Grains 2005, Stuttgart, Germany, 18-22 July 2005. - London : CRC Press , 2005 . - S. 1185
ISBN 9780415383486

Weitere URLs

Abstract

Vibratory conveyors are well established in routine industrial production for controlled transport of bulk solids. Because of the complicated interactions between the vibrating trough and the particles both glide and throw movements frequently appear within one oscillation cycle. Apart from the amplitude and frequency, the form of the trajectory of the conveyor’s motion also exerts an influence. The goal of our project is a systematic investigation of the dependence of the transport behavior on the three principle oscillation forms: linear, circular and elliptic. For circular oscillations of the shaking trough a non-monotonous dependence of the transport velocity on the normalized acceleration 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.