![]() ![]() Our experimental results show that values of the effective density and viscosity are close to the average density of the mixture and to the viscosity of the mixture predicted by a correlation suggested by Thomas when the test particles are of the same size as the suspended particles, or larger, but not too much smaller. Particular emphasis has been given to the effective values of the density and viscosity of the mixture which allow us to describe slow settling of a test sphere using the Francis modification of the Stokes formula for the settling of a single sphere in a Newtonian fluid with wall effects. Both sedimenting and fluidized suspensions are considered. This paper presents results of a series of experiments on the settling velocity of spheres in two‐component solid–liquid suspensions.
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