Numerical study of hydrodynamics in an agitated vessel equipped with ecentrically located high-speed impeller

Marek Domański,

Joanna Karcz

Abstrakt

In this study the results of numerical simulations of hydrodynamics in an agitated vessel with eccentrically located impeller (HE3 or propeller) are presented. Mathematical model of the velocity field is based on Navier-Stocks equation. Characteristics of turbulent flow of liquid is described with the use of CFD methods. In this work the Scale Adaptive Simulation approach coupled with Sliding Mesh method is used. The time-dependent simulations were carried out with ANSYS 14 CFX software.

Słowa kluczowe: agitated vessel, eccentric impeller, CFD, SAS-SST
References

Stręk F., Mieszanie i mieszalniki, WNT, Warsaw 1981.

Galletti C., Pintus S., Brunazzi E., Effect of shaft eccentricity and impeller blade thickness on the vortices features in an unbaffled vessel, Chemical Engineering Research & Design, vol. 85(4A), 2009, 391-400.

Galletti C., Brunazzi E., On the main flow features and instabilities in an unbaffled vessel agitated with an eccentrically located impeller, Chemical Engineering Science, vol. 63, 2008, 4494-4505.

Sanchez Cervantes M.I., Lacombe J., Muzzio F.J., Alvarez M.M., Novel bioreactor design for the culture of suspended mammalian cells. Part I: Mixing characterization, Chemical Engineering Science, vol. 61, 2006, 8075-8084.

Karcz J., Cudak M., Szoplik J., Stirring of a liquid in a tank with an eccentrically located impeller, Chemical Engineering Science, vol. 60, 2005, 2369-2380.

Celik I. B., Ghia U., Roache P.J., Freitas Ch.J., Coan H., Raad P.E., Procedure for Estimation and Reporting of Uncertainty Due to Discretization in CFD Applications, Journal of Fluid Engineering, vol.130(7), 2008, 078001.

Menter F.R., Egorov Y., The Scale-Adaptive Simulation Method for Unsteady Turbulent Flow Predictions. Part 1: Theory and Model Description, Flow Turbulence and Combustion, vol. 85(1), 2010, 113-138.

Egorov Y., Menter F.R., Lechner R., Cokljat D., The Scale-Adaptive Simulation Method for Unsteady Turbulent Flow Predictions. Part 2: Application to Complex Flows, Flow Turbulence and Combustion, vol. 85(1), 201, 139-165.

Singh H., Fletcher D.F., Nijdam J.J., An assessment of different turbulence models for predicting flow in a baffled tank stirred with a Rushton turbine, Chemical Engineering Science, vol. 66(23), 2011, 5976-5988.

Xuereb C., Bertrand, J., 3-D hydrodynamics in a tank stirred by a double-propeller system and filled with a liquid having evolving rheological properties, Chemical Engineering Science, vol. 51(10), 1996, 1725-1734.

Cudak M., Wymiana ciepła i pędu w mieszalniku z niecnetrycznie