CFD Prediction of the Turbulent Flow Generated in Stirred Square Tank by a Rushton Turbine

DOI: 10.4236/epe.2014.65010   PDF   HTML   XML   4,954 Downloads   6,755 Views   Citations


The Computational Fluid Dynamics (CFD) have been used in the analysis and design of agitated vessel. Most of the researches done in this area are limited to the baffled or unbaffled stirred tank. In this paper, we have been interested in studying of the new design. Particularly, the flow and turbulence fields in square vessel stirred by a standard Rushton turbine have been simulated by means of CFD techniques. The Navier-Stokes equations governing the phenomenon of transfer of momentum are solved by a discretization method for finite volume. The MRF approaches can be used in simulation of the steady state problem. The numerical results from the application of CFD code Fluent with the stationary approach Multi Reference Frame (MRF) are presented in the planes containing the blade. The validation of CFD results with experimental measurements showed a good agreement.

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Chtourou, W. , Ammar, M. , Driss, Z. and Abid, M. (2014) CFD Prediction of the Turbulent Flow Generated in Stirred Square Tank by a Rushton Turbine. Energy and Power Engineering, 6, 95-110. doi: 10.4236/epe.2014.65010.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Rushton, J.H., Costich, E.W. and Everett, H.J. (1950) Power Characteristics of Mixing Impellers. Chemical Engineering Progress, 46, 467-476.
[2] Montante, G., Lee, K.C., Brucato, A. and Yianneskis, M. (2004) Numerical Simulation of the Dependency of Flow Pattern on Impeller Clearance in Stirred Vessels. Chemical Engineering Science, 56, 3751-3770.
[3] Montante, G., Mostek, M., Jahoda, M. and Magelli, F. (2005) CFD Simulations and Experimental Validation of Homogenisation Curves and Mixing Time in Stirred Newtonian and Pseudoplastic Liquids. Chemical Engineering Science, 60, 2427-2437.
[4] Derkson, J. (2002) Confined and Agitated Swirling Flows with Applications in Chemical Engineering. Flow Turbulence and Combustion, 69, 3-33.
[5] Armenante, P.M., Changgen, L., Chou, C., Fort, I. and Medek, J. (1997) Velocity Profiles in a Closed, Unbaflled Vessel: Comparison between Experimental LDV Data and Numerical CFD Redictions. Chemical Engineering Science, 52, 3483-3492.
[6] Alcamo, R., Micale, G., Grisafi, F., Brucato, A. and Ciofalo, M. (2005) Large-Eddy Simulation of Turbulent Flow in an Unbaffled Stirred Tank Driven by a Rushton Turbine. Chemical Engineering Science, 60, 2303-2316.
[7] Yeoch, S.L., Papadakis, G. and Yianneskis, M. (2005) Determination of Mixing and Degree of Homogeneity in Stirred Vessels with Large Eddy Simulation. Chemical Engineering Science, 60, 2293-2302.
[8] Nagata, S. (1975) Mixing Principles and Applications. John Wiley & Sons Halstead Press, Japan.
[9] Mazzarotta, B. (1993) Comminution Phenomena in Stirred Sugar Suspensions. A.I.Ch.E. Symposium Series, 89, 112-117.
[10] Bakker, A., Fasano, J.B. and Myers, K.J. (1994) Effects of Flow Pattern on the Solids Distribution in a Stirred Tank. IChemE Symp Series, No. 136, 1-8.
[11] Kilander, J. and Rasmuson, A. (2005) Energy Dissipation and Macro Instabilities in a Stirred Square Tank Investigated Using an LE PIV Approach and LDA Measurements. Chemical Engineering Science, 60, 6844-6856.
[12] Kresta, S.M., Mao, D. and Roussinova, V. (2006) Batch Blend Time in Square Stirred Tanks. Chemical Engineering Science, 61, 2823-2825.
[13] Kilander, J., Blomstrom, S. and Rasmuson, A. (2006) Rasmuson Spatial and Temporal Evolution of Floc Size Distribution in a Stirred Square Tank Investigated Using PIV and Image Analysis. Chemical Engineering Science, 61, 76517667.
[14] Kilander, J., Blomstrom, S. and Rasmuson, A. (2007) Scale-Up Behaviour in Stirred Square Flocculation Tanks. Chemical Engineering Science, 62, 1606-1618.
[15] Brucato, A., Ciofalo, M., Grisafi, F. and Micale, G. (1998) Numerical Prediction of Flow Fields in Baffled Stirred Vessels: A Comparison of Alternative Modelling Approaches. Chemical Engineering Science, 53, 3653-3684.
[16] Aubin, J., Fletcher, D. and Xuereb, C. (2004) Modelling Turbulent Flow in Stirred Tanks with CFD: The Influence of the Modelling Approach, Turbulence Model and Numerical Schema. Experimental Thermal and Fluid Science, 28, 431-445.
[17] Bakker, A. and Oshinowo, L.M. (2004) Modelling of Turbulence in Stirred Vessels Using Large Eddy Simulation. Chemical Engineering Research and Design, 82, 1169-1178.
[18] Bakker, A., Oshinowo, L.M. and Marshall, E.M. (2000) The Use of Large Eddy Simulation to Eddy Simulation to Study Stirred Vessel Hydrodynamics. Proceeding of the 10th European Conference on Mixing, Delft, 2-5 July 2000, 247-254.
[19] Patankar, S.V. (1980) Numerical Heat Transfer and Fluid Flow. McGraw Hill, New York.

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