Drag Coefficient and Settling Velocity of Particles in Non-Newtonian Suspensions

[+] Author and Article Information
M. Y. Dedegil

Institut für Fördertechnik, Abt. Strömungsfördertechnik, University of Karlsruhe (TH), Federal Republic of Germany

J. Fluids Eng 109(3), 319-323 (Sep 01, 1987) (5 pages) doi:10.1115/1.3242667 History: Received June 03, 1986; Revised March 25, 1987; Online October 26, 2009


Drag forces on bodies in non-Newtonian fluids which are to be described by using the Reynolds number should only contain forces which are associated with the fluid velocity or particle velocity. Forces due to the yield stress τ0 must be considered separately. According to its physical composition, the Reynolds number must be calculated by means of the fully representative shear stress including the yield stress τ0 . Then the drag coefficient cD as a function of the Reynolds number can be traced back to that of Newtonian fluids.

Copyright © 1987 by ASME
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