Hamburg 2001 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 17: Granulare Materie / Kontaktdynamik

DY 17.3: Vortrag

Montag, 26. März 2001, 16:15–16:30, S 7

Anomalous Diffusion in Granular Flow — •Devaraj van der Meer, Ko van der Weele, and Detlef Lohse — Faculty of Applied Physics, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands

Granular gas in a row of N connected compartments is shown to exhibit anomalous diffusion, which goes as t^1/3 rather than t^1/2. This is explained in terms of a flux model. In the continuum limit N → ∞ this model yields a convection-diffusion equation of the KPZ type. Special attention is paid to the self-similar form of the profiles of diffusing clusters within the gas.