聚结(物理)
物理
幂律
非牛顿流体
牛顿流体
机械
流变学
指数
剪切(地质)
统计物理学
经典力学
热力学
材料科学
复合材料
统计
哲学
天体生物学
语言学
数学
作者
Hao Chen,Xiaolong Pan,Qichun Nie,Qianli Ma,Haisheng Fang,Zhouping Yin
出处
期刊:Physics of Fluids
[American Institute of Physics]
日期:2022-03-01
卷期号:34 (3)
被引量:11
摘要
To better understand the coalescence of droplets, which play critical roles in diverse natural processes and industrial applications, we give attention to the non-Newtonian rheology of liquid drops—in particular, studying the coalescence of two non-Newtonian droplets on a solid surface, with special attention to the effect of the shear thinning behavior. Based on a theoretical power-law model, we show that the height h0 of the liquid bridge connecting two adjacent droplets grows with a power function of time as h0 ∼ tn, where n indicates the power-law exponent. Through numerical simulations, we reveal a self-similar regime during the initial stage of coalescence and propose an accurate prediction for capturing the spatial structure of the flow. Our results also update the effect of the contact angle, which significantly alters the coalescence dynamics.
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