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Power Consumption in the Turbulent Regime for a Coaxial Mixer
Author(s) -
Tanguy Philippe A.,
Thibault Francis
Publication year - 2002
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450800423
Subject(s) - impeller , turbulence , coaxial , reynolds number , mechanics , turbine , power consumption , power (physics) , physics , slip factor , electrical engineering , engineering , thermodynamics
The power consumption of a new coaxial mixer composed of an anchor impeller and a pitched‐blade turbine impeller, and a series of rods operated in a contra‐rotating mode has been characterized experimentally in the turbulent regime. It is shown that both the power curve and the turbulent power number vary significantly with the speed ratio between the impellers. Likewise with single impeller mixers, the transition regime starts at a Reynolds number above 100 and the turbulent regime between 10 3 and 10 4 irrespective of the definition of the Reynolds number used.