Velocity of Variously Shaped Particles Settling in Non-Newtonian Fluids
This research  concerns the development of a drag coefficient correlation for nonspherical particles settling in purely viscous non-Newtonian fluids. The dynamic interaction term between fluids and particles was studied using both the dimensional analysis and a large number of experimental data covering the laminar, transitional and turbulent flow regime to obtain a generalized correlation for the determination of the settling velocity valid for particles on a sphericity (ø) range from 0.5 to 1.
Unlike the previous published research in this area, this generalized correlation does not depend on a particular rheological model.
In equation (1) the functions Ω(ø) and X(ø) known from experiments considering the limit cases of laminar fully turbulent flow and the exponent m is determined from the data reduction using the Churchill's asymptotic method and an extensive data file from the literature.
KeywordsShear Rate Settling Velocity Rheological Model Creeping Flow Nonspherical Particle
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