Velocity distribution of vibration-driven granular gas in Knudsen regime in microgravity
SUN, Z.
Beijing National Laboratory for Condensed Matter Physics
Center for Space Science and Applied Research [Beijing] [CSSAR]
Beijing National Laboratory for Condensed Matter Physics
Center for Space Science and Applied Research [Beijing] [CSSAR]
GARRABOS, Yves
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ESEME : Équipe du Supercritique pour l'Environnement, les Matériaux et l'Espace : Équipe commune CEA-CNRS (2000-2014)
< Reduce
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
ESEME : Équipe du Supercritique pour l'Environnement, les Matériaux et l'Espace : Équipe commune CEA-CNRS (2000-2014)
Language
en
Article de revue
This item was published in
Microgravity Science and Technology. 2008, vol. 20, n° 2, p. 73-80
Springer
English Abstract
Dynamics of quasi-2D dissipative granular gas is studied in micro-gravity condition (of the order of 10 − 4 g) in the limit of Knudsen regime. The gas, made of 4 spheres, is confined in a square cell enforced to follow ...Read more >
Dynamics of quasi-2D dissipative granular gas is studied in micro-gravity condition (of the order of 10 − 4 g) in the limit of Knudsen regime. The gas, made of 4 spheres, is confined in a square cell enforced to follow linear sinusoidal vibration in ten different vibration modes. The trajectory of one of the particles is followed for 2 hours, and is reconstructed from video data by particle tracking. From statistical analysis, we find that (i) loss due to wall friction is small, (ii) trajectory looks ergodic in space, and (iii) distribution ρ(ν) of speed follows an exponential distribution...Read less <
English Keywords
Granular gas
Velocity distribution
Origin
Hal imported