3D hydrodynamics involving multiple eccentric impellers in unbaffled cylindrical tank |
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Authors: | Houari Ameur |
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Affiliation: | Institut des Sciences et Technologies, Centre Universitaire Salhi Ahmed CUN-SA, BP 66, Nâama 45000, Algeria |
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Abstract: | In this paper, the numerical predictions of 3D hydrodynamics and power consumption in a vessel stirred by mul-tiple eccentrical y located impel ers are presented. The vessel is a flat-bottomed cylindrical one equipped with six-curved bladed impel ers. Aqueous solutions of xanthan gum are used, which have a shear thinning behavior with yield stress. The influence of several parameters on the mixing efficiency has been investigated, namely:the stirring rate, fluid rheology, impeller number and impeller clearance from the tank bottom. Our predicted results are compared with other experimental data and a satisfactory agreement is found. |
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Keywords: | Computational fluid dynamics Mixing Non-Newtonian fluids Laminar flow Eccentric impel er |
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