We present an experimental realization of a 2D vibrated granular packing. The new agitation method allows a spatially non synchronized influx of energy and the study of the vibrated packing at steady state. By image analysis of fast-camera movies, we obtain the velocity fluctuation spectra at different vertical levels and then, we separate the agitation velocities from the velocity fluctuations corresponding to the "thermalized" degrees of freedom. By measuring the corresponding particle diffusivities, we show that, in spite of a large heterogeneity and anisotropy of the vibration, a relation between diffusivity and fluctuating kinetic energy can be identified. © 2009 Springer-Verlag Berlin Heidelberg.
CITATION STYLE
Harich, R., Lumay, G., & Clément, E. (2009). Kinetic energy fluctuations and diffusivity in a 2D vibrated granular packing. In Traffic and Granular Flow 2007 (pp. 597–602). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-540-77074-9_64
Mendeley helps you to discover research relevant for your work.