文章基本信息

标题：A discussion for the formation of cassie droplet on nanostructured surface using molecular dynamics simulation
本地全文：下载
作者：Dong Niu ; Hongtao Gao ; Yuying Yan 等
期刊名称：Case Studies in Thermal Engineering
印刷版ISSN：2214-157X
电子版ISSN：2214-157X
出版年度：2021
卷号：25
页码：100976
DOI：10.1016/j.csite.2021.100976
出版社：Elsevier B.V.
摘要：Dropwise condensation has attracted a large amount of attention due to its higher heat transfer coefficient than filmwise condensation. Droplet nucleation and growth have a significant influence on droplet state in condensation process. In this study, the molecular dynamics simulation is performed to investigate the dropwise condensation on different nanostructured surfaces. For the nanostructured surface with a high aspect ratio, all the droplets nucleate and grow inside the rough structures. Decreasing the center distance of nanostructures or increasing the heat flux could lead to a preferential growth on the up section of the nanostructures. Furthermore, the effect of droplet growth and coalescence on the transition from Wenzel state to Cassie state is investigated for a large-scale system. The simulation results show that three typical droplet state transition mode corresponding to the heat flux could be obtained.
关键词：Condensation ; Droplet coalescence ; Molecular dynamics simulation ; Cassie droplet