液滴撞击细纤维现象在空气过滤、淡水收集及纤维涂层等工程领域很常见，研究该过程的动力学行为及捕集机理，对提高纤维过滤器效率、优化捕获液滴数量具有重要意义。简要分析了液滴碰撞动力学；综述了国内外学者对液滴撞击细纤维动力学过程进行的可视化及数值研究，讨论了撞击速度与丝径、偏心距和纤维表面温度、纤维弹性等参数对碰撞后流动状态及液膜厚度的影响，以及液滴在细纤维上的形状和临界体积等问题。结合电场作用下液滴的动力学特性，耦合电场和重力场是未来研究液滴碰撞动力学的重要方向。

The phenomenon of droplet impingement on a thin fiber is often encountered in the fields of air filtration,freshwater collection and fiber coating.It is of great practical significance to study the dynamic behavior and trapping mechanism of the process for improving the efficiency of fiber filter and optimizing the number of droplets captured.The dynamics of droplet collision is briefly analyzed firstly.Then the visualization and numerical studies of droplet impact on a thin fiber by domestic and foreign scholars are summarized.The effects of parameters such as impact velocity and wire diameter,eccentricity,fiber surface temperature,fiber elasticity on the flow state and film thickness after collision,as well as the shape and critical volume of droplets on a thin fiber are discussed.Finally,considering the dynamic characteristics of droplets under electric field,it is considered that coupling the electric and gravitational fields is an important direction of droplet collision dynamics in the future.

O35

国家自然科学基金（51706101）