Collect. Czech. Chem. Commun. 1987, 52, 1172-1177

Frictional resistance of spheres rotating in power-law non-Newtonian fluids

Pavel Mitschka

Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol


Frictional resistance coefficients have been calculated for the rotation of spheres in non-Newtonian power-law fluids under laminar boundary-layer conditions using the approximate method of integral momentum balances. The values obtained agree satisfactorily with the available experimental data and the published theoretical solution.