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CFD Investigation of Interface Location in Stirred Tanks with a Concave Impeller

Authors: M. H. Sedaghat, R. Janamiri, M. Safdari, I. Mahdavi, A. Hosseini, P. Parvasi, A. Sinkakarimi, M. Karimi

Abstract:

In this work study the location of interface in a stirred vessel with a Concave impeller by computational fluid dynamic was presented. To modeling rotating the impeller, sliding mesh (SM) technique was used and standard k-ε model was selected for turbulence closure. Mean tangential, radial and axial velocities and also turbulent kinetic energy (k) and turbulent dissipation rate (ε) in various points of tank was investigated. Results show sensitivity of system to location of interface and radius of 7 to 10cm for interface in the vessel with existence characteristics cause to increase the accuracy of simulation.

Keywords: CFD, Interface, turbulence model, Concave impeller

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1087642

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References:


[1] Ranade VV, Bourne JR, Joshi JB. “Fluid mechanics and blending in agitated tanks”. Chem Eng Sci,46:1883–93(1991).
[2] Van,t Riet,k., Boom, J .M and Smith, J.M, "power consumption, impeller coalescence and recirculation in aerated vessels”, Trans IChemE,54:124-131(1976).
[3] Wamoeskerken, M. M. C. G .and Smith, J.M., “The hollow blade agitator for dispersion and mass transfer”, Trans IChemE,Chem Eng Res Des,67:193-198(1989).
[4] Hjorth, S., Imeller apparatus, US Patent 4779990, ( 1998).
[5] Middleton, J. C, Agitators, US Patent 5198156,(1993).
[6] Bakker, A., Myers, K. J. and Smith, J. M., “How to disperse gases in liquids”, Chem Eng, 101(12): 98-104(1994).
[7] Satio, F., Nienow, A. W., Chatwin, S. and Moore, I. P. T., “Power, gas dispersion and homogenization characteristics of Scaba SRGT and Rushton turbine impellers”, J Chem Eng Japan, 25(3): 281– 287(1992).