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Mixing of a Granular Material in a Bidimensional Rotating Drum

Published online by Cambridge University Press:  03 September 2012

Eric Clement ,
Jean Rajchenbach  and
Jacques Duran
Eric Clement
Affiliation:
Laboratoire A.O.M.C. - URA 800 - Université Pierre et Marie Curie, 4, pl. Jussieu - B86, 75005, FRANCE
Jean Rajchenbach
Affiliation:
Laboratoire A.O.M.C. - URA 800 - Université Pierre et Marie Curie, 4, pl. Jussieu - B86, 75005, FRANCE
Jacques Duran
Affiliation:
Laboratoire A.O.M.C. - URA 800 - Université Pierre et Marie Curie, 4, pl. Jussieu - B86, 75005, FRANCE
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Abstract

We report experimental measurements on mixing properties in bidimensional rotating drum. Using an image processing device, we follow the trajectories of tracer particles in a monodisperse assembly of beads. Tracer particles with different size ratios exhibit a violent segregation effect: a smaller particle has a tendency to stay in the centre and a larger one will rather dwell on the edges. Furthermore, for a tracer of identical size, we evidence a specific dispersion property where the centre and the edges are competing attractors of the mixing dynamics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 367: Symposium P – Fractal Aspects of Materials , 1994 , 513
Copyright
Copyright © Materials Research Society 1995

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