Abstract
The flow of a viscous fluid on the outside of a partially submerged, rotating horizontal cylinder is one of the basic fundamental coating flows. The main features of this flow for a Newtonian fluid were described by Campanella and Cerro [ Chem. Engng Sci. 39, 1443 (1984)]. A rapid flow approximation [Cerro and Scriven Ind. Engng Chem. Fundam. 19, 40 (1980)] is used to develop a film profile equation for a power-law type non-Newtonian fluid. The film profile equation allows to compute a unique critical flow regime for each kind of power law fluid characterized by two rheological constants, K and n. Theoretical results are shown to be in very good agreement with experimental results for a wide range of fluid properties.
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