3D hydrodynamics involving multiple eccentric impellers in unbaffled cylindrical tank  

作　　者：Houari Ameur 

机构地区：[1]Institut des Sciences et Technologies,Centre Universitaire Salhi Ahmed CUN-SA

出　　处：《Chinese Journal of Chemical Engineering》2016年第5期572-580,共9页中国化学工程学报（英文版）

摘　　要：In this paper, the numerical predictions of 3D hydrodynamics and power consumption in a vessel stirred by mul- tiple eccentrically located impellers are presented. The vessel is a fiat-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 the mixing efficiency has been investigated, namely： the stirring rate, fluid theology, impeller number and impeller clearance from the tank bottom. Our predicted results are compared with other experimental data and a satisfactory agreement is found.In this paper,the numerical predictions of 3D hydrodynamics and power consumption in a vessel stirred by multiple 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 in fluence of several parameters on the mixing ef ficiency 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.

关 键 词：Computational fluid dynamics MIXING Non-Newtonian fluids Laminar flow Eccentric impeller 

分 类 号：TQ051.72[化学工程] TQ021.1