Granular flows down inclined and vibrated planes: influence of basal friction
Laboratoire d’Energétique et de Mécanique Théorique et Appliquée (LEMTA), Université de Lorraine-CNRS, UMR 7563, Vandoeuvre-lés-Nancy, 54504, France
Published online: 30 June 2017
We present an experimental study about granular avalanches when external mechanical vibrations are applied. The results of the flow properties highlight the existence of two distinct regimes: (i) a gravity-driven regime at large angles where scaling laws are in agreement with those reported in the literature for non-vibrating granular flows and (ii) a vibration-driven regime at small angles where no flow occurs without applied vibrations. The flow in this regime is well described by a vibrationinduced activated process. We also propose an empirical law to capture the evolution of the thickness of the deposits as a function of the vibration intensity and the inclination angle.
© The Authors, published by EDP Sciences, 2017
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