Scaling analysis and SE simulation of the tilted cylinder-interface capillary interaction

2018 International Conference on Material Strength and Applied Mechanics

材料科学;力学

Gao, S.Q.^1,2 ; Zhang, X.Y.^2 ; Zhou, Y.H.^2

National Key Laboratory of Science and Technology on Reactor System Design Technology, Nuclear Power Institute of China, Chengdu

610041, China^1

Department of Mechanics and Engineering Sciences, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou

730000, China^2

关键词: Approximation approach;    Capillary force;    Capillary interactions;    In-depth analysis;    Micro Pillars;    Scaling analysis;    Superhydrophobicity;    Water-walking insects;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/372/1/012017/pdf
DOI  :  10.1088/1757-899X/372/1/012017

来源: IOP

【 摘 要 】

The capillary interaction induced by a tilted cylinder and interface is the basic configuration of many complex systems, such as micro-pillar arrays clustering, super-hydrophobicity of hairy surface, water-walking insects, and fiber aggregation. We systematically analyzed the scaling laws of tilt angle, contact angle, and cylinder radius on the contact line shape by SE simulation and experiment. The following in-depth analysis of the characteristic parameters (shift, stretch and distortion) of the deformed contact lines reveals the self-similar shape of contact line. Then a general capillary force scaling law is proposed to incredibly grasp all the simulated and experimental data by a quite straightforward ellipse approximation approach.