东南大学学报（自然科学版）2025，Vol.55Issue(3)：872-879,8.DOI:10.3969/j.issn.1001-0505.2025.03.030
液滴撞击微柱阵列超疏水表面的弹跳动力学研究
Research on bouncing dynamics of droplet impacting superhydrophobic surface with micropillar arrays
摘要
Abstract
The lattice Boltzmann method is used to simulate the droplet impact on superhydrophobic surfaces with micropillar arrays.The effects of the impact velocity and surface morphology on the droplet kinetics and contact time are analyzed.The results demonstrate that the bouncing phenomenon caused by droplet impact in-cludes normal bouncing and pancake bouncing,the formation of which is mainly affected by the impact veloc-ity and the spacing and height of micropillar arrays.When the droplet impact velocity is small,a normal bouncing with a long contact time occurs.When the impact velocity is large,a rapid pancake bouncing oc-curs,which effectively shortens the contact time.If the surface morphology of the micropillar array has an enough height and a suitable spacing,the contact retention time between the bottom of the droplet and the mi-cropillar surface can be shortened,and droplet can be prevented from falling into the gap of the micropillar ar-ray,further realizing the pancake bouncing.Pancake bouncing with shorter contact time occurs when the en-ergy conversion rate exceeds 0.038.关键词
液滴撞击/微柱阵列/超疏水表面(SHS)/接触时间/能量演化Key words
droplet impact/micropillar array/superhydrophobic surface(SHS)/contact time/energy evolution分类
能源与动力引用本文复制引用
郭帅,赵心怡,王鑫,陈振乾..液滴撞击微柱阵列超疏水表面的弹跳动力学研究[J].东南大学学报（自然科学版）,2025,55(3):872-879,8.基金项目
国家自然科学基金资助项目(52306075) （52306075）
江苏省基础研究专项资金(自然科学基金)资助项目(BK20230849) （自然科学基金）
中国博士后科学基金资助项目(2023M740591). （2023M740591）
