摘要
液滴撞击壁面现象常见于在雨水收集、喷雾冷却、喷漆和喷墨打印等实际应用场合。针对单液滴撞击壁面的振荡行为,采用流体体积法和自适应网格细化方法提高数值模拟追踪界面的准确性,并通过对比实验验证数值结果的可靠性,研究表面张力和液滴尺寸对液滴撞击壁面引发振荡行为的影响。结果表明:若保持静态接触角为常数,随着增加表面张力,液滴的内聚力增强,导致平均振荡周期缩短,最大铺展因子βmax逐渐减小;另一方面,随着液滴直径的减少,最大铺展因子βmax减少,平均振荡周期显著缩短。
The phenomenon of droplets impinging on the wall is common in practical applications,such as rainwater collection,spray cooling,spray painting and inkjet printing.In response to the oscillation behavior of a single droplet impacting on a solid surface,the fluid volume method and adaptive mesh refinement method are used to improve the accuracy of the numerical simulation,and the reliability of the numerical results is verified by comparative experiments.The effects of surface tension and droplet size on the oscillation behavior caused by droplet impacting are studied.The results show that the increment of surface tension(keeping the static contact angle constant)shortens the average oscillation period,and also decreases the maximum spreading factorβmax.On the other hand,with the decrease of droplet diameter,the maximum spreading factorβmax decreases,and the average oscillation period is significantly shortened.
作者
尹宗军
苏蓉
吕若彤
左夏楠
彭闪闪
Yin Zongjun;Su Rong;Lv Ruotong;Zuo Xianan;Peng Shanshan(School of Mechanical Engineering,Anhui Institute of Information Technology,Wuhu 241100,China)
出处
《黄山学院学报》
2023年第5期25-30,共6页
Journal of Huangshan University
基金
安徽省教育厅高校自然科学研究重点项目(KJ2020A0826,KJ2021A1204)。
关键词
单液滴
振荡
表面张力
液滴尺寸
single droplet
oscillation
surface tension
droplet size
