江苏大学学报（自然科学版）2026，Vol.47Issue(2)：158-165,8.DOI:10.3969/j.issn.1671-7775.2026.02.005
连续微流体搅拌器中高黏度流体混合性能的数值模拟
Numerical simulation on mixing performance of high viscosity fluid in continuous microfluidic stirrer
摘要
Abstract
To solve the insufficient mixing problem of high-viscosity fluids in stirrer,the continuous microfluidic stirrer based on high shear and efficient mass transfer principle was proposed.The orthogonal analysis method was used to investigate the structural parameters of the single-stage stirrer and the enhancement effects on medium mixing.The optimal parameters for the single-stage micro-stirrer were determined with impeller diameter of 30 mm,impeller height of 30 mm,8 blade and blade installation height of 5 mm above the bottom.The internal flow field and the mixing characteristics of high viscosity fluids with different mass fractions were investigated by the numerical simulation methods.The axial velocity distribution,radial velocity distribution,mass fraction distribution,and the relationship between mixing intensity and axial distance were obtained under various stirring speeds.The results indicate that increasing the rotational speed enhances the intensity of the main circulation zone within the tank,and the distribution range of the high-speed flow region in the mixing tank correspondingly expands.Elevating the concentration of high viscosity fluid reduces the main circulation range of the flow field,which leads to the decrease in mixing intensity at the outlet.Therefore,it is advisable to choose micro-stirrer with three or more stages or increase the stirring speed to facilitate the mixing of high viscosity fluids.关键词
搅拌器/微流体/混合指数/高黏度流体/数值模拟Key words
stirrer/microfluidic/mixing index/high viscosity fluid/numerical simulation分类
数理科学引用本文复制引用
张金凤,张静,赵东波,徐笑,秦绍栋..连续微流体搅拌器中高黏度流体混合性能的数值模拟[J].江苏大学学报（自然科学版）,2026,47(2):158-165,8.基金项目
国家重点研发计划项目(2021YFC3001703-3) （2021YFC3001703-3）
