Abstract
Blending of viscous newtonian liquids was studied in dual- and triple-turbine agitated tanks. The dimensionless power, mixing and interstage flow numbers were all found to be dependent on the Reynolds number as long as the full development of turbulence was inhibited by viscosity (Re < 2 × 10 4) and they were found to be constant above that limit. The complexity of the transitional regime makes it adverse for simple correlation, but, surprisingly, modelling of mixing in the upper transition region (Re > 400) could still be achieved using a compartment model developed elsewhere for turbulent mixing simulation in this geometry. The model corresponds to a simplified physical representation of the hydrodynamics of the tank
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