Numerical study of fluid flow and power consumption in a stirred vessel with a Scaba 6SRGT impeller

• Authors: Houari Ameur , Mohamed Bouzit , Mustapha Helmaoui
• Languages of publication: EN

Abstracts

EN

The present work deals with agitation of non-Newtonian fluids in a stirred vessel by Scaba impellers. A commercial CFD package (CFX 12.0) was used to solve the 3D hydrodynamics and to characterise at every point flow patterns especially in the region swept by the impeller. A shear thinning fluid with yield stress was modelled. The influence of agitator speed, impeller location and blade size on the fluid flow and power consumption was investigated. The results obtained are compared with available experimental data and a good agreement is observed. It was found that an increase in blade size is beneficial to enlargement of the well stirred region, but that results in an increased power consumption. A short distance between the impeller and the tank walls limits the flow around the agitator and yields higher power consumption. Thus, the precise middle of the tank is the most appropriate position for this kind of impeller.

Keywords

EN

3D numerical study; non-Newtonian fluid; stirred vessel; Scaba impeller; impeller eccentricity

• Publisher: De Gruyter Open
• Journal: Chemical and Process Engineering
• Year: 2011
• Volume: 32
• Issue: 4
• Pages: 351-366

Dates

published

1 - 12 - 2011

online

15 - 2 - 2012

Contributors

author

Houari Ameur

• Faculté de Génie Mécanique, USTO-MB, 1505 El M'nouar, Oran, Algérie

author

Mohamed Bouzit

• Faculté de Génie Mécanique, USTO-MB, 1505 El M'nouar, Oran, Algérie

author

Mustapha Helmaoui

• Faculté de Génie Mécanique, USTO-MB, 1505 El M'nouar, Oran, Algérie

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Identifiers

DOI

10.2478/v10176-011-0028-0