Cluster Formation in a Granular Medium Fluidized by Vibrations in Low Gravity
- 12 July 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 83 (2) , 440-443
- https://doi.org/10.1103/physrevlett.83.440
Abstract
We report an experimental study of a “gas” of inelastically colliding particles, excited by vibrations in low gravity. In the case of a dilute granular medium, we observe a spatially homogeneous gaslike regime, the pressure of which scales like the 3/2 power of the vibration velocity. When the density of the medium is increased, the spatially homogeneous fluidized state is no longer stable but displays the formation of a motionless dense cluster surrounded by low particle density regions.Keywords
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