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Numerical Analysis of Droplet Impact on the Convex Surface with Liquid Film
Langmuir ( IF 3.7 ) Pub Date : 2022-06-10 , DOI: 10.1021/acs.langmuir.2c00742 Zhe Lin 1 , Hao Zhang 1 , Junyu Tao 1 , Yuzhen Jin 1 , Zuchao Zhu 1
Langmuir ( IF 3.7 ) Pub Date : 2022-06-10 , DOI: 10.1021/acs.langmuir.2c00742 Zhe Lin 1 , Hao Zhang 1 , Junyu Tao 1 , Yuzhen Jin 1 , Zuchao Zhu 1
Affiliation
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Droplet impact on film is a common natural appearance in industrial production. The numerical simulation method is used to simulate the evolution process of droplet impact on different convex surfaces with liquid film to study the influence of various surface structures on the impact of droplets on the film. The mechanism of droplet impact on irregular wall is also explored. The effect of the height and width of the convex on the evolution of the interphase interface and the characteristic parameters of the crown and cavity are discussed. Based on the results, the convex has a great effect on the change form of droplets after impacting the liquid film. A region of high pressure will appear above the convex, and vortices will form around it. In terms of the characteristics of the crown, the growth rate of the crown height increases with the height of the convex. The spreading diameter of the crown increases with the height of the convex. The effect of convex width on the crown is less than that of convex height. The convex has a great influence on the evolution of the cavity, and the convex of different scales will affect the development shape of the cavity. The present finding provides theoretical guidance for the application of droplets impinging on liquid film.
中文翻译：
液滴对带液膜凸面冲击的数值分析
液滴撞击薄膜是工业生产中常见的自然现象。采用数值模拟的方法，用液膜模拟液滴撞击不同凸面的演化过程，研究各种表面结构对液滴对膜的影响。还探讨了液滴撞击不规则壁的机理。讨论了凸面高度和宽度对相界面演化的影响以及冠部和型腔的特征参数。结果表明，凸面对液滴撞击液膜后的变化形式有很大的影响。凸面上方会出现一个高压区域，并且会在其周围形成漩涡。就冠的特性而言，冠高的增长率随着凸面高度的增加而增加。冠部的扩展直径随着凸部的高度而增加。凸面宽度对冠部的影响小于凸面高度。凸面对型腔的演化影响很大，不同尺度的凸面会影响型腔的发育形态。本发现为液滴撞击液膜的应用提供了理论指导。
更新日期：2022-06-10
中文翻译：
液滴对带液膜凸面冲击的数值分析
液滴撞击薄膜是工业生产中常见的自然现象。采用数值模拟的方法，用液膜模拟液滴撞击不同凸面的演化过程，研究各种表面结构对液滴对膜的影响。还探讨了液滴撞击不规则壁的机理。讨论了凸面高度和宽度对相界面演化的影响以及冠部和型腔的特征参数。结果表明，凸面对液滴撞击液膜后的变化形式有很大的影响。凸面上方会出现一个高压区域，并且会在其周围形成漩涡。就冠的特性而言，冠高的增长率随着凸面高度的增加而增加。冠部的扩展直径随着凸部的高度而增加。凸面宽度对冠部的影响小于凸面高度。凸面对型腔的演化影响很大，不同尺度的凸面会影响型腔的发育形态。本发现为液滴撞击液膜的应用提供了理论指导。
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