Numerical investigation of the effect of the Rushton type turbine design factors on agitated tank flow characteristics

Date

2008-08-01

Author

Yapici, Kerim
Karasözen, Bülent
Schaefer, Michael
Uludağ, Yusuf

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The turbulent flow field in a mixing tank generated by the six-blade Rushton turbine impeller is predicted by using computational fluid dynamics. The governing differential equations of the fluid flow are approximated by an algebraic set of equations through a finite volume method, while large eddy simulation is employed to handle the effects originating from the turbulence. The relative motion between the rotating impeller and the stationary baffle is considered by clicking mesh method. The effects of impeller clearance and disc thickness on the power number are determined and it is found that the power number decreases with decreasing clearance and increasing disc thickness. The results are comparable with those of well-established measurement techniques in terms of time-averaged velocity field, turbulent kinetic energy, dissipation rate, and power number.

Subject Keywords

Agitated tank, Rushton turbine, Computational fluid dynamics, Finite volume method, Large eddy simulation

URI

https://hdl.handle.net/11511/31616

Journal

CHEMICAL ENGINEERING AND PROCESSING

DOI

https://doi.org/10.1016/j.cep.2007.05.002

Collections

Graduate School of Applied Mathematics, Article

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Citation Formats

K. Yapici, B. Karasözen, M. Schaefer, and Y. Uludağ, “Numerical investigation of the effect of the Rushton type turbine design factors on agitated tank flow characteristics,” CHEMICAL ENGINEERING AND PROCESSING, pp. 1346–1355, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31616.