Experimental study of granular surface flows via a fast camera: A continuous description - Archive ouverte HAL Access content directly
Journal Articles Physics of Fluids Year : 2002

Experimental study of granular surface flows via a fast camera: A continuous description

(1) , (2, 1) , (1)
1
2

Abstract

Depth averaged conservation equations are written for granular surface flows. Their application to the study of steady surface flows in a rotating drum allows to find experimentally the constitutive relations needed to close these equations from measurements of the velocity profile in the flowing layer at the center of the drum and from the flowing layer thickness and the static/flowing boundary profiles. The velocity varies linearly with depth, with a gradient independent of both the flowing layer thickness and the static/flowing boundary local slope. The first two closure relations relating the flow rate and the momentum flux to the flowing layer thickness and the slope are then deduced. Measurements of the profile of the flowing layer thickness and the static/flowing boundary in the whole drum explicitly give the last relation concerning the force acting on the flowing layer. Finally, these closure relations are compared to existing continuous models of surface flows.
Fichier principal
Vignette du fichier
0109046.pdf (464.26 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

cea-01373869 , version 1 (29-09-2016)

Identifiers

Cite

Daniel Bonamy, F. Daviaud, L. Laurent. Experimental study of granular surface flows via a fast camera: A continuous description. Physics of Fluids, 2002, 14, pp.1666-1673. ⟨10.1063/1.1459720⟩. ⟨cea-01373869⟩
44 View
154 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More