A simple interpolation formula for the sedimentation velocity of
a particle, including the limiting cases of small and large Reynolds
numbers is given and the deviations from the law of Stokes for different
Reynolds numbers are demonstrated.
Adjustment of the law of sedimentation is important to describe
the curve of separation of large particles. The representing the
hydrocyclone separation curve in a linearized about the particles
size form, allows to justify the assumptions underlying the model
of Schubert–Neesse and to estimate the effective turbulent diffusion
coefficient in the apparatus.