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Discharge of repulsive grains from a silo: Experiments and simulations
Hernández-Enríquez, D.; Lumay, Geoffroy; Pacheco-Vázquez, F. et al.
2017In EPJ Web of Conferences, 140
Peer reviewed
 

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Abstract :
[en] In granular matter, sliding friction and collisions among grains are fundamental mechanisms of energy dissipation that determine the particles dynamics. Here we consider an unconventional granular system composed of magnetic repelling grains confined in a two dimensional cell that interact only through their magnetic field. The repulsive interaction prevents contact among grains and therefore produces a different dynamics compared to the dynamics of classical granular systems. In particular, we present experiments and simulations on the discharge of this repulsive granular medium from a silo. The results reveal an inverted density profile and a plug-flow through the aperture that contrast with the dynamics displayed by contacting grains. Moreover, the simulations allow to estimate the friction coefficient generated by the lateral confinement. © The Authors, published by EDP Sciences, 2017.
Disciplines :
Physics
Author, co-author :
Hernández-Enríquez, D.;  Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apartado Postal J-48, Puebla, Mexico
Lumay, Geoffroy ;  Université de Liège - ULiège > Département de physique > Physique expér. de la matière molle et des syst. complexes
Pacheco-Vázquez, F.;  Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apartado Postal J-48, Puebla, Mexico
Radjai, F.
Delenne, J. Y.
Nezamabadi, S.
Radjai, F.
Luding, S.
Language :
English
Title :
Discharge of repulsive grains from a silo: Experiments and simulations
Publication date :
2017
Event name :
8th International Conference on Micromechanics on Granular Media, Powders and Grains 2017
Event date :
3 July 2017 through 7 July 2017
Audience :
International
Journal title :
EPJ Web of Conferences
ISSN :
2101-6275
eISSN :
2100-014X
Publisher :
EDP Sciences
Volume :
140
Peer reviewed :
Peer reviewed
Commentary :
128607
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