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Flow generated by radial flow impellers: PIV measurements and CFD simulations

Khopkar, Avinash R. and Aubin, Joelle and Rubio-Atoche, Carlos and Xuereb, Catherine and Le Sauze, Nathalie and Bertrand, Joël and Ranade, Vivek V. Flow generated by radial flow impellers: PIV measurements and CFD simulations. (2004) International Journal of Chemical Reactor Engineering, vol. 2 . ISSN 1542-6580

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Abstract

Particle image velocimetry (PIV) and computational fluid dynamics (CFD) have been used to investigate the single phase and gas-liquid flow generated by a Scaba SRGT turbine. The key details of the trailing vortices, the turbulent flow around the impeller blades and the accumulation of gas have been studied by using PIV measurements and CFD simulations. Both the experimental and numerical results show that the flow and the trailing vortices are not altered significantly upon gassing. The simulated results are generally in good agreement with the experimental findings. The CFD simulations also show that only small low-pressure regions exist behind the blades of the Scaba turbine compared with the very large lowpressure zones formed by the Rushton turbine. These results enable better understanding of the improved performance of the Scaba turbine for gas-liquid dispersions compared with the Rushton turbine.

Item Type:Article
Additional Information:This publication is available at http://www.bepress.com/ijcre/vol2/A18/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > National Chemical Laboratory - NCL (INDIA)
Laboratory name:
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Deposited By: Joelle Aubin-cano

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