Spreading of viscoplastic droplets

被引：28
|
作者：
Jalaal, Maziyar [1 ,2 ]
Stoeber, Boris [2 ,3 ]
Balmforth, Neil J. [4 ]
机构：
[1] Univ Cambridge, Dept Appl Math & Theoret Phys, Cambridge CB3 0WA, England
[2] Univ British Columbia, Dept Mech Engn, Vancouver, BC V6T 1Z4, Canada
[3] Univ British Columbia, Dept Elect & Comp Engn, Vancouver, BC V6T 1Z4, Canada
[4] Univ British Columbia, Dept Math, Vancouver, BC V6T 1Z2, Canada
来源：
JOURNAL OF FLUID MECHANICS | 2021年 / 914卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
drops; complex fluids; non-Newtonian flows;
D O I：
10.1017/jfm.2020.886
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The spreading under surface tension and gravity of a droplet of yield-stress fluid over a thin film of the same material is studied. The droplet converges to a final equilibrium shape once the driving stresses inside the droplet fall below the yield stress. Scaling laws are presented for the final radius and complemented with an asymptotic analysis for shallow droplets. Moreover, numerical simulations using the volume-of-fluid method and a regularized constitutive law, and experiments with an aqueous solution of Carbopol, are presented.
引用
收藏
页数：18
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