# Experiments on a gravity-free dispersion of large solid spheres in a Newtonian fluid under shear

@article{Bagnold1954ExperimentsOA, title={Experiments on a gravity-free dispersion of large solid spheres in a Newtonian fluid under shear}, author={Ralph Alger Bagnold}, journal={Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences}, year={1954}, volume={225}, pages={49 - 63} }

Dispersions of solid spherical grains of diameter D = 0.13cm were sheared in Newtonian fluids of varying viscosity (water and a glycerine-water-alcohol mixture) in the annular space between two concentric drums. The density σ of the grains was balanced against the density ρ of the fluid, giving a condition of no differential forces due to radial acceleration. The volume concentration C of the grains was varied between 62 and 13 %. A substantial radial dispersive pressure was found to be exerted…

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