Improved suspension quality and liquid level stability in stirred tanks with Rotor-Stator agitator based on CFD simulation  

作　　者：Cuicui Yin Jiazhen He Yongnan Xiong Zhibo Zhang Xing Luo Yao Shu Danfeng Long Kaihong Zheng 

机构地区：[1]Institute of New Materials,Guangdong Academy of Sciences,National Engineering Research Center of Powder Metallurgy of Titanium&Rare Metals,Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application,Guangzhou,510651,China [2]Institute of Intelligent Manufacturing,Guangdong Academy of Sciences,Guangzhou,510651,China

出　　处：《Particuology》2023年第11期64-75,共12页颗粒学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.52006041);the Guangdong Academy of Sciences(Nos.2021GDASYL-20210103101,2020GDASYL-20200101001,2022GDASZH-2022010109);the Guangdong Major Project of Basic and Applied Basic Research(No.2020B0301030006)。

摘　　要：The solid-liquid mixing is an important operation unit in the preparation of composites by stirring casting.High quality composite materials need good homogeneity and stable liquid level.In this work,the performances of the Rotor-Stator agitator for solid suspension in stirred tank were investigated through CFD modeling,including the homogeneity,power consumption and liquid level stability.The Eulerian-Eulerian(E-E)multiphase model and the RNG k-εturbulence model were adopted for modeling the multiphase flow and the turbulence effects,respectively.The effect of various important parameters such as stirring speed,particle size,solid loading and the use of baffles were examined.Adding a stator structure with array holes outside the rotor can optimize the flow pattern,thereby improving the mixing uniformity and liquid level stability.The homogeneity and liquid level stability attained by the Rotor-Stator agitator were better than those for the A200(an axial-flow agitator)and the Rushton(a radial-flow agitator).

关 键 词：Solid-liquid mixing Rotor-Statoragitator Suspension quality Liquid level stability POWERCONSUMPTION Computational fluid dynamics(CFD) 

分 类 号：O35[理学—流体力学]