制冷技术2025，Vol.45Issue(1)：21-26,48,7.DOI:10.3969/j.issn.2095-4468.2025.01.104
剪切变稀流体液滴铺展行为的数值模拟研究
Numerical Simulation Research on Spreading Behavior of Shear-Thinning Fluid Droplet
摘要
Abstract
A numerical simulation on the spreading process of shear-thinning fluid droplets impacting a solid surface is conducted using the finite element phase-field method with a power-law model.Based on the numerical model,the spreading process of shear-thinning fluid droplets with different physical parameters is calculated for impacts on hydrophilic,neutral,and hydrophobic surfaces,respectively.The results indicate that with different initial droplet velocities,shear-thinning extents,and surface wettability lead to a different maximum spreading factor of from 1.1 to 4.8.Further analysis of the flow field reveals that the droplets exhibit different flow states on surfaces with different wettability.Further analysis of the numerical results indicates that under an identical Weber number(We),the maximum spreading factor βmax of the droplets follows a logarithm relationship with non-Newtonian Reynolds number(Ren)of which the slope increases with an enhancing We.关键词
非牛顿流体/液滴铺展/表面润湿性Key words
Droplet spreading/Non-Newtonian fluid/Surface wettability分类
通用工业技术引用本文复制引用
陈嘉祺,刘海龙..剪切变稀流体液滴铺展行为的数值模拟研究[J].制冷技术,2025,45(1):21-26,48,7.基金项目
国家自然科学基金(No.51876086). （No.51876086）
