Details

Autor(en) / Beteiligte

• Olafsen, J S
• Urbach, J S

Titel

Velocity distributions and density fluctuations in a granular gas

Ist Teil von

• Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 1999-09, Vol.60 (3), p.R2468-R2471

Ort / Verlag

United States

Erscheinungsjahr

1999

Quelle

PROLA

Beschreibungen/Notizen

• 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.