双层组合桨中心及偏心搅拌三维流场的数值模拟

利用计算流体力学的方法,采用Laminar层流模型对双层六直斜叶交替组合桨在甘油与水的混合物中进行中心及偏心搅拌的三维流场进行数值计算,得到了组合桨以恒转速200r/min在搅拌槽内转动时所产生的3种不同流场结构,对比分析了速度矢量图、速度云图以及轴向、径向和周向速度分布曲线,为层流搅拌槽的设计和实际应用提供了依据。

Numerical simulation of three-dimensional flow field in stirred tank with double combined impeller stirring centeredly and eccentrically

Computational fluid dynamics （CFD） method is applied to study the flow field in stirred tank with double layer straight and inclined impeller combined alternately stirring centeredly and eccentrically. The laminar model is employed to simulate the three-dimensional flow field of the stirred tank with the fluid of glycerin mixing with water, three different flow strcture in stirred tank with the double layer impeller rotating at constant speed of 200 r/min is obtained. Comparison analysis is carried out to the axial, radial and tangent velocity vector plots, velocity contours and velocity distribution curves. The research provides the basis for the design and practical application of the stirred tank.