双液滴碰撞行为及调控机制的研究进展

双液滴碰撞行为广泛存在于雨滴形成、燃油喷雾、喷雾冷却、喷墨印刷、农药喷洒等自然现象与工业应用过程中，其碰撞结果会受到液滴参数及气相环境等因素的综合影响，研究双液滴的碰撞行为规律及调控机制一直是该领域的热点。结合目前双液滴碰撞的实验进展和数值模型，将围绕着碰撞行为的主控因素与调控机制展开综述，具体介绍了碰撞参数、液滴理化性质、气相环境等因素对液滴碰撞行为的影响规律与调控结果，并展望了液滴碰撞理论及应用的发展趋势和方向。

Research progress of binary droplet collision behavior and regulation mechanism

The collision behavior of binary droplets is widely present in natural phenomena and industrial applications such as raindrop formation, fuel spray, spray cooling, inkjet printing, pesticide spraying, etc. The collision result will be comprehensively affected by droplet parameters and gas phase environment. Research on the collision behavior and regulation mechanism of binary droplets has always been a hot spot in this field. Combining with the current experimental progress and numerical model of binary droplet collision, the main control factors and regulation mechanism of collision behavior will be reviewed. The influence of collision parameters, droplet physical and chemical properties, gas phase environment on the droplet collision behavior and control results is specifically introduced, and the development trend and direction of droplet collision theory and application are prospected.