南京航空航天大学学报（英文版）2023，Vol.40Issue(2)：159-168,10.
基于液滴定向反弹的混合润湿性表面设计准则
Design Principle of Mixed-Wettability Surfaces for Inducing Droplet Directional Rebound
摘要
Abstract
Directional rebound of droplet impacting on solid surfaces is of great significance in engineering applications such as anti-icing/fogging and self-cleaning.Mixed-wettability surfaces have been shown to be as an effective way for droplet manipulation.The impact of droplet on hydrophobic substrate decorated with a hydrophilic stripe is investigated numerically.The validated diffuse interface method is adopted for interface capture.First,the formation of satellite droplets during the impact process is explored,and the role of mixed-wettability surfaces in the droplet spreading,retraction and rebound stages is clarified by analyzing the vertical and lateral velocities of the droplet.After that,the effect of the stripe width on the droplet rebound form and the contact time is studied systematically.Special attention is paid to the mechanisms of dynamics and energy transfer during the evolution of liquid film and droplet bouncing.The obtained results can provide useful guidance for the design of mixed-wettability surfaces and further optimize the control of droplet directional rebound.关键词
液滴撞击/混合润湿性表面/定向反弹/设计准则Key words
droplet impact/mixed-wettability surfaces/directional rebound/design principle分类
数理科学引用本文复制引用
张童伟,KAKU Chuyo,李美萱,吴杰..基于液滴定向反弹的混合润湿性表面设计准则[J].南京航空航天大学学报（英文版）,2023,40(2):159-168,10.基金项目
This work was supported by the Foundation of National Key Laboratory of Science and Tech-nology on Aerodynamic Design and Research(No.D5150230003),the Open Fund of Key Laboratory of Flight Techniques and Flight Safety,CAAC(No.FZ2021KF20),and the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD). （No.D5150230003）
