化工学报2016，Vol.67Issue(12)：5006-5014,9.DOI:10.11949/j.issn.0438-1157.20160662
液滴碰撞亲-疏水性组合壁面的数值分析
Numerical simulation of droplet impact on hybrid surfaces with different wettabilities
摘要
Abstract
Surfaces with patterned domains of different wettabilities can be used for controlling the impact process. The dynamic behavior of droplet impact on hybrid surfaces with different wettabilities is simulated using the VOF method by dimensionless. Effects of Weber number and hydrophilic region diameter are studied with constant Reynold number. A drop impact regime map is generated, in which the impact dynamics is characterized as a function of Weber number and relative diameter of hydrophilic region. With the increase of Weber number, the droplet presents three different status: deposition, pinch-off as a short liquid column and break up as a long liquid column. The threshold Weber number where pinch-off occurs will increase with the increase of hydrophilic region diameter. For high Weber number, the maximum spreading factors are the same for different hydrophilic region diameter. While for low Weber number, the maximum spreading factors will increase with it.关键词
液滴碰撞/亲-疏水性/数值模拟/动态特性/铺展因子Key words
droplet impact/wettabilities/simulation/dynamic behavior/spreading factors分类
能源科技引用本文复制引用
陈圆圆,徐进良,李季巍..液滴碰撞亲-疏水性组合壁面的数值分析[J].化工学报,2016,67(12):5006-5014,9.基金项目
国家自然科学基金项目（51436004）；国家自然科学基金国际合作与交流项目（51210011）。@@@@ supported by the National Natural Science Foundation of China (51436004) and the National Natural Science Foundation of International Cooperation and Exchange Programs (51210011) （51436004）
