Modeling and simulations of the behavior of glass particles in a rotating drum in heptane and water vapor atmospheres

This paper presents a molecular dynamics simulation of an experiment on the stability of a pile of glass beads in a rotating drum filled with a “humid” atmosphere. The experimental avalanche angles were found to be different whether the humidity came from water or heptane. These experimental results...

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Bibliographic Details
Published in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2002-02, Vol.25 (2), p.217-222
Main Authors: Olivi-Tran, N., Fraysse, N., Girard, P., Ramonda, M., Chatain, D.
Format: Article
Language:English
Subjects:
Electronics
Engineering Sciences
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Summary:This paper presents a molecular dynamics simulation of an experiment on the stability of a pile of glass beads in a rotating drum filled with a “humid” atmosphere. The experimental avalanche angles were found to be different whether the humidity came from water or heptane. These experimental results allow us to set the basic hypothesis of the modeling: in the heptane atmosphere the glass beads are connected by deformable liquid bridges, whereas in the case of a water atmosphere solid bridges form between the beads. The numerical calculations of the avalanche angle as a function of the undersaturated pressure of heptane or water are in good agreement with the experimental results.
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/e20020024