Three-dimensional VOF simulation of droplet impacting on a superhydrophobic surface

作     者：Jin Sun Qi Liu Yunhong Liang Zhaohua Lin Chunbao Liu 

作者机构：School of Mechanical Science and Aerospace EngineeringJilin University Changchun 13002 China Key Laboratory of Bionic Engineering Ministry of Education Jilin University Changchun. China 

基　　金：supported by Key Scientific and Technological Project of Jilin Province Science and Technology Projects in Jilin Province Department of Education The Advanced Manufacturing Projects of Government and University Co-construction Program funded by Jilin Province 

出 版 物：《Bio-Design and Manufacturing》 (生物设计与制造（英文）)

年 卷 期：2019年第2卷第1期

页      码：10-23页

摘      要：It is very important to analyze and study the motion process of droplets impacting superhydrophobic surface, which is of great significanee to understand the mechanism of superhydrophobic surface and guide the design and manufacture of superhydrophobic surface. Taking by three-dimensional volume of fluid (VOF) simulation coupling coupled level set (CLS) algorithm, on the one hand, we simulate the morphological changes in the process of droplet impingement, as well as the internal velocity and the pressure distribution;on the other hand,we focus on the effects of droplet impact velocity, surface wettability, surface tension on the dynamics of the droplets. The CLSVOF model inherits the advantages of the VOF model for accurately constructing the phase interface and inherits the advantage that the level set can accurately calculate the surface tension, which improves the accuracy of the calculation of the droplet impact on the superhydrophobic surface. The computed results distinctly demonstrated there were four stages: falling, spreading, shrinking and rebounding. The time history of each stage agreed well with the pictures captured by high-speed camera, which indicated the computational fluid dynamics scheme was effective. Moreover, the motion mechanism of the droplets impacting on the solid surface is elaborated, which was helpful to control the solid-liquid interface to achieve a variety of solid interface characteristics.

主 题 词：Superhydrophobic Droplet impact Computational fluid dynamic VOF 

学科分类：0710[理学-生物科学类] 0831[工学-公安技术类] 07[理学] 0817[工学-轻工类] 0807[工学-电子信息类] 09[农学] 0805[工学-能源动力学] 0802[工学-机械学] 0836[0836] 0811[工学-水利类] 

核心收录：

D　O　I：10.1007/s42242-019-00035-w

馆 藏 号：203622994...