摘要
液滴与超疏水固体表面碰撞的反弹现象是自然界与工程领域中常见的流动现象,也是流体力学研究的前沿问题。本文利用高速摄像和图像处理技术研究了加热超疏水表面上粘弹性液滴撞击过程的铺展变形、反弹、及振动现象,探索不同撞击速度和高温条件下对应的撞击现象,总结了液滴反弹的相图,论证了速度、温度与液滴反弹的关系。揭示了超疏水表面温度对粘弹性液滴振动的重要影响,实验结果可为液滴控制技术研究提供参考。
The rebound phenomenon of droplet impacting on super-hydrophobic surfaces is a common flow phenomenon in nature and engineering fields,and is also a frontier research in fluid mechanics.In this paper,the spread deformation,rebound and vibration of viscoelastic droplets on a heated superhydrophobic surface are studied by using high-speed camera and image processing technology.The corresponding impact phenomena of droplets with different impact velocities on various temperature surfaces are explored.The phase diagram of droplet rebound is summarized,and the relationship between velocity,temperature and droplet rebound is demonstrated.The important influence of superhydrophobic surface temperature on the vibration of viscoelastic droplets is revealed.The experimental results can provide a reference for the research of droplet control technology.
作者
陈倩
李斌
CHEN Qian;LI Bin(School of Intelligent Manufacturing,Sichuan University of Arts and Science,Dazhou Sichuan 635000)
出处
《首都师范大学学报（自然科学版）》
2023年第5期41-45,共5页
Journal of Capital Normal University：Natural Science Edition
基金
四川省自然科学基金项目(2022NSFSC1989)
四川文理学院智能制造产业技术研究院项目(ZNZZ2207)。
关键词
粘弹性液滴
撞击力学
超疏水
viscoelastic droplet
impact dynamics
superhydrophobicity
