3D hydrodynamics involving multiple eccentric impellers in unbaffled cylindrical tank

doi:10.1016/j.cjche.2015.12.010

摘要/Abstract

摘要： In this paper, the numerical predictions of 3D hydrodynamics and power consumption in a vessel stirred bymultiple eccentrically located impellers are presented. The vessel is a flat-bottomed cylindrical one equipped with six-curved bladed impellers. Aqueous solutions of xanthan gum are used, which have a shear thinning behavior with yield stress. The influence of several parameters on themixing efficiency has been investigated, namely:the stirring rate, fluid rheology, impeller number and impeller clearance fromthe tank bottom. Our predicted results are compared with other experimental data and a satisfactory agreement is found.

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关键词: Computational fluid dynamics, Mixing, Non-Newtonian fluids, Laminar flow, Eccentric impeller

Abstract: In this paper, the numerical predictions of 3D hydrodynamics and power consumption in a vessel stirred bymultiple eccentrically located impellers are presented. The vessel is a flat-bottomed cylindrical one equipped with six-curved bladed impellers. Aqueous solutions of xanthan gum are used, which have a shear thinning behavior with yield stress. The influence of several parameters on themixing efficiency has been investigated, namely:the stirring rate, fluid rheology, impeller number and impeller clearance fromthe tank bottom. Our predicted results are compared with other experimental data and a satisfactory agreement is found.

Houari Ameur. 3D hydrodynamics involving multiple eccentric impellers in unbaffled cylindrical tank[J]. Chinese Journal of Chemical Engineering, 2016, 24(5): 572-580.

Houari Ameur. 3D hydrodynamics involving multiple eccentric impellers in unbaffled cylindrical tank[J]. Chin.J.Chem.Eng., 2016, 24(5): 572-580.

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