Power curves and flow patterns for a range of impellers in Newtonian fluids: 40<Re<5×10(5)

The mixing pattern and power number in a stirred vessel depend not only on the impeller design but also on the impeller/tank geometry and flow regime. The relationship between these parameters is reported for a Rushton turbine (6DT), six-bladed 45°-pitched turbine pumping down (6MFD) and (6MFU) up...

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Bibliographic Details
Main Authors: Ibrahim, S., Nienow, A.W.
Format: Article
Published: Institution of Chemical Engineers 1995
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Summary:The mixing pattern and power number in a stirred vessel depend not only on the impeller design but also on the impeller/tank geometry and flow regime. The relationship between these parameters is reported for a Rushton turbine (6DT), six-bladed 45°-pitched turbine pumping down (6MFD) and (6MFU) up and three proprietary impellers. The impellers were used over a wide range of impeller diameter (D)/vessel diameter (T) and impeller clearance (C)/T values. Flow patterns were recorded and power numbers were measured as a function of Reynolds number from about 40 to about 50,000 in Newtonian fluids. The results obtained were used to aid in the study of the impellers in solid-liquid and three-phase systems.