Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.
Mixing in stirred vessels is commonly carried at low to
moderate Reynolds number. Under steady stirring conditions
(impeller centered with respect to the vessel centerline and
rotating in one direction) well mixed regions around the
impeller and isolated regions far from the impeller are formed
into the vessel. Such regions can be gradually vanished if the
flow is continuously perturbed, which is some cases can be
done by displacing the impeller from the vessel centerline.
This paper describes an experimental analysis based on
Newtonian flow fields observed by particle image velocimetry
in a stirred vessel with the impeller placed eccentrically with
respect to the vessel centerline.