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Soft Matter and Biological Physics

Eur. Phys. J. E 1, 55-59

Convection in horizontally shaken granular material

C. Salueña12 - T. Pöschel2

1 Departament de Física Fonamental, Divisió de Ciències Experimentals i Matemàtiques, Universitat de Barcelona, Spain
2 Humboldt-Universität zu Berlin, Institut für Physik, Invalidenstraß e 110, 10115 Berlin, Germany
thorsten@physik.hu-berlin.de

Received 3 March 1999

Abstract
In horizontally shaken granular material different types of pattern formation have been reported. We want to deal with the convection instability which has been observed in experiments and which recently has been investigated numerically. Using two dimensional molecular dynamics we show that the convection pattern depends crucially on the inelastic properties of the material. The concept of restitution coefficient provides arguments for the change of the behaviour with varying inelasticity.

PACS
81.05.Rm Porous materials; granular materials - 83.70.Fn Granular solids - 46.40.-f Vibrations and mechanical waves

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