Velocity Distributions & Density Fluctuations in a 2D Granular Gas

Abstract

Velocity distributions in a vibrated granular monolayer are investigated experimentally. Non-Gaussian velocity distributions are observed at low vibration amplitudes but cross over smoothly to Gaussian distributions as the amplitude is increased. Cross-correlations between fluctuations in density and temperature are present only when the velocity distributions are strongly non-Gaussian. Confining the expansion of the granular layer results in non-Gaussian velocity distributions that persist to high vibration amplitudes.

Corrected mistake in legend of Figure 3. 10 pages revtex, 6 figures, submitted to Phys Rev E

References in corpus (4)

• Clustering, Order, and Collapse in a Driven Granular Monolayer
• Clustering and Non-Gaussian Behavior in Granular Matter
• Energy flows in vibrated granular media
• Propagating front in an excited granular layer

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