Abstract
Further studies of the discharge from a six blade Rushton turbine are reported. Photographic velocity measurements have been used to examine the trailing vortex system in water and aqueous glycerol. An analysis of the vortex field in terms of a solution to the simplified Navier-Stokes equations shows reasonable agreement with the measured velocity profiles. Pressure field determinations at two different scales prove that Reynolds number alone is a sufficient scale-up parameter. The centrifugal accelerations and shear rates associated with the trailing vortices are shown to be much greater than previous literature has implied. Although restricted to single phase flow the results presented are of importance to most applications of disc turbines to dispersion operations.
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