Phys Rev E Stat Nonlin Soft Matter Phys. 2013 Apr;87(4):044201. doi: 10.1103/PhysRevE.87.044201. Epub 2013 Apr 23.

Granular convection and the Brazil nut effect in reduced gravity.

Physical review. E, Statistical, nonlinear, and soft matter physics

Carsten Güttler, Ingo von Borstel, Rainer Schräpler, Jürgen Blum

PMID: 23679551 DOI: 10.1103/PhysRevE.87.044201

Abstract

We present laboratory experiments of a vertically vibrated granular medium consisting of 1-mm-diameter glass beads with embedded 8-mm-diameter intruder glass beads. The experiments were performed in the laboratory as well as in a parabolic flight under reduced-gravity conditions (on Martian and Lunar gravity levels). We measured the mean rise velocity of the large glass beads and present its dependence on the fill height of the sample containers, the excitation acceleration, and the ambient gravity level. We find that the rise velocity scales in the same manner for all three gravity regimes and roughly linearly with gravity.

Publication Types

• Journal Article
• Research Support, Non-U.S. Gov't