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Vol. 132, Issue 9, September 2011, pp.108-121

 

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Numerical Study of Mechanical Stirring in Case of Yield Stress Fluid with Circular Anchor Impeller

 

a*Brahim MEBARKI, b Belkacem DRAOUI, b Lakhdar RAHMANI,
b Mohamed BOUANINI, b Mebrouk REBHI, b El hadj BENACHOUR

a Laboratoire d'Energétique en zones arides, Faculté des Sciences et technologie,

Université de Béchar, BP N° 417, 08000, Bechar, Algerie

Tel: 00 213 49 81 90 24, fax: 00 213 49 81 52 44

b Faculté des Sciences et technologie, Université de Béchar, Algérie

E-mail: brahimo12002@yahoo.fr

 

 

Received: 12 August 2011   /Accepted: 19 September 2011   /Published: 27 September 2011

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Abstract: In this work the characterization of hydrodynamic fields of incompressible yield stress fluid with regularization model of Bercovier and Engelman in a cylindrical vessel not chicaned equipped with circular anchor stirrer was undertaken by means of numerical simulation using computational fluid dynamics. Simulations flow of a Bingham fluid agitated by straights blades anchor was used to validate the rheological model implemented of the fluid treated. The flow structures, and especially the effect of inertia, the plasticity and the yield stress, are discussed. We have analyzed also the influence of rheological parameters on the hydrodynamic flow behaviours, such as the velocity components and the global characteristic like power consumption.

 

Keywords: Mixing, Stirred vessel, Anchor impeller, Yield stress, Computational fluid dynamics (CFD)

 

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