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Open Engineering

formerly Central European Journal of Engineering

Editor-in-Chief: Ritter, William

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CFD simulation of the laminar flow in stirred tanks generated by double helical ribbons and double helical screw ribbons impellers

Zied Driss
  • Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax, (ENIS), University of Sfax (ENIS), B.P. 1173, km 3.5 Soukra, 3038, Sfax, Tunisia
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/ Sarhan Karray
  • Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax, (ENIS), University of Sfax (ENIS), B.P. 1173, km 3.5 Soukra, 3038, Sfax, Tunisia
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/ Hedi Kchaou
  • Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax, (ENIS), University of Sfax (ENIS), B.P. 1173, km 3.5 Soukra, 3038, Sfax, Tunisia
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/ Mohamed Abid
  • Laboratory of Electro-Mechanic Systems (LASEM), National School of Engineers of Sfax, (ENIS), University of Sfax (ENIS), B.P. 1173, km 3.5 Soukra, 3038, Sfax, Tunisia
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Published Online: 2011-10-13 | DOI: https://doi.org/10.2478/s13531-011-0034-5

Abstract

In this paper, the mixing performance of double helical ribbons and double helical screw ribbons impellers mounted on stirred tanks is numerical investigated. The computer simulations are conducted within a specific computational fluid dynamic (CFD) code, based on resolution of the Naviers-Stokes equations in the laminar flow with a finite volume discretization. The field velocity and the viscous dissipation rate are presented in different vessel planes. The global characteristics and the power consumption of these impellers are also studied. The numerical results showed that the velocity field is more active with the double helical screw ribbons impeller. In this case, the effectiveness of the viscous dissipation and the pumping flow has been obviously noted. Also, the pumping and the energy efficiency reach the highest values at the same Reynolds number. The good agreement between the numerical results and the experimental data quietly confirmed the analysed method.

Keywords: CFD; Finite volume; Modelling; Laminar flow; Double helical ribbons; Screw; Stirred tank

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About the article

Published Online: 2011-10-13

Published in Print: 2011-12-01


Citation Information: Open Engineering, Volume 1, Issue 4, Pages 413–422, ISSN (Online) 2391-5439, DOI: https://doi.org/10.2478/s13531-011-0034-5.

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© 2011 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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