Peer-Reviewed Journal Details
Mandatory Fields
Glover, GMC, Fitzpatrick, JJ;
Chemical Engineering Journal
Modelling Vortex Formation In An Unbaffled Stirred Tank Reactors
Optional Fields
Agitating liquids in unbaffled stirred tank leads to the formation of a vortex in the region of the impeller shaft when operating in the turbulent flow regime. A numerical model is presented here that captures such a vortex. The volume of fluid model, a multiphase flow model was employed in conjunction with a multiple reference frame model and the shear stress turbulence model. The dimensions of the tank considered here, were 0.585 m for the liquid depth and tank diameter with a 0.2925 m diameter impeller at a height of 0.2925 m. The impeller considered was an eight-bladed paddle type agitator that was rotating with an angular velocity of 7.54 rad s(-1) (72 rpm) giving a Reynolds number of 10(5) and Froude number of 0.043. Preliminary results of a second investigation into the effect of liquid phase properties on the vortex formed are also presented. (c) 2006 Elsevier B.V. All rights reserved..
DOI 10.1016/j.cej.2006.09.019
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