Large-eddy simulation of turbulent flow in a stirred tank driven by a Rushton turbine |
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Authors: | R Zadghaffari J Revstedt |
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Affiliation: | a Transport Phenomena Research Center, Chemical Engineering Faculty, Sahand University of Technology, P.O. Box 51335/1996, Tabriz, Iran b Faculty of Engineering, Lund University Division of Fluid Mechanics, P.O. Box 118, SE-22100 Lund, Sweden |
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Abstract: | Large-eddy simulation (LES) of mixing process in a baffled tank was presented. The impeller rotation was modeled using the sliding mesh technique. In this study the CFD code was used for simulation of a standard vessel agitated by a 6-blade Rushton turbine and results were evaluated in terms of the predicted flow field, power number, mean velocity components, mixing time, turbulent kinetic energy and turbulent dissipation rate using published experimental data. Subsequently, the effects of varying injection position of the passive scalar have been investigated. The results show that LES is a reliable tool to investigate the unsteady behavior of the turbulent flow in stirred tank. |
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Keywords: | CFD Stirred tank Mixing time Power number LES SM |
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