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
Copyright EDP Sciences, Società Italiana di Fisica, Springer-Verlag
