Abstract
The flow of a granular material down an incline of finite width with a strain-rate dependent coefficient of friction and a conical yield criterion is semi-analytically obtained using a characteristic method for flows on a deep layer of grains. This analysis leads to a flow field with three distinct zones: a Bagnold-flow zone below the free surface, a dead-zone and a matching zone between the two, linked to slippage at the wall. A good agreement between the computed flow field and experimental data is obtained.
Similar content being viewed by others
References
Balmforth N.J., Kerswell R.R.: Granular collapse in two dimensions. J. Fluid Mech. 538, 399–428 (2005)
Cleaver J.A.S., Nedderman R.M.: Theoretical prediction of stress and velocity profiles in conical hoppers. Chem. Eng. Sci 48, 3693–3702 (1993)
Da Cruz F., Emam S., Prochnow M., Roux J.-N., Chevoir F.: Rheophysics of dense granular materials: discrete simulations of plane shear. Phys. Rev. E 72, 021309 (2005)
de Ryck, A.: Granular flows down inclined channels with a strain-rate dependent friction coefficient. Part II: Cohesive materials. Granular Matter (2007). doi:10.1007/s10035-008-0106-2
Jenike A.W.: A theory of flow of particulate solids in converging and diverging channels based on a conical yield function. Powder Technol. 50, 229–236 (1987)
Jop P., Forterre Y., Pouliquen O.: A constitutive law for dense granular flows. Nature 441, 727–730 (2006)
Midi G.D.R.: On dense granular flows. Eur. Phys. J. E 14(4), 341–365 (2004)
Nedderman R.M.: Statics and Kinematics of Granular Materials. Cambridge University Press, Cambridge (1992)
Savage S.B.: The mechanics of rapid granular flows. Adv. Appl. Mech. 24, 289–366 (1984)
Savage S.B., Hutter K.: The motion of a finite mass of granular material down a rough incline. J. Fluid Mech. 199, 177–215 (1989)
Staron L., Hinch E.J.: The spreading of a granular mass: role ofgrain properties and initial conditions. Granular Matter 9, 205–217 (2007)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
de Ryck, A., Ansart, R. & Dodds, J.A. Granular flows down inclined channels with a strain-rate dependent friction coefficient. Part I: Non-cohesive materials. Granular Matter 10, 353–360 (2008). https://doi.org/10.1007/s10035-008-0105-3
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10035-008-0105-3