SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2016, Vol. 24 ›› Issue (5): 572-580.DOI: 10.1016/j.cjche.2015.12.010

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3D hydrodynamics involving multiple eccentric impellers in unbaffled cylindrical tank

Houari Ameur   

  1. Institut des Sciences et Technologies, Centre Universitaire Salhi Ahmed CUN-SA, BP 66, Nâama 45000, Algeria
  • Received:2015-02-19 Revised:2015-06-23 Online:2016-06-14 Published:2016-05-28

3D hydrodynamics involving multiple eccentric impellers in unbaffled cylindrical tank

Houari Ameur   

  1. Institut des Sciences et Technologies, Centre Universitaire Salhi Ahmed CUN-SA, BP 66, Nâama 45000, Algeria

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.

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.

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