Drop impact on an airfoil surface takes place in drop-laden two-phase flow conditions such as rain and icing, which are encountered by wind turbines or airplanes. This phenomenon is characterized by complex nonlinear interactions that manifest rich flow physics and pose unique modeling challenges. In this article, the state of the art of the research about drop impact on airfoil surface in the natural drop-laden two-phase flow environment is presented. The potential flow physics, hazards, characteristic parameters, droplet trajectory calculation, drop impact dynamics and effects are discussed. The most key points in establishing the governing equations for a drop-laden flow lie in the modeling of raindrop splash and water film. The various factors affecting the drop impact dynamics and the effects of drop impact on airfoil aerodynamic performance are summarized. Finally, the principle challenges and future research directions in the field as well as some promising measures to deal with the adverse effects of drop-laden flows on airfoil performance are proposed.

落差的两相流中发生对机翼表面的跌落冲击风力涡轮机或飞机遇到的诸如雨和糖霜之类的条件。这种现象的特征是复杂的非线性相互作用，表现出丰富的流动物理特性，并提出了独特的建模挑战。在这篇文章中，介绍了在自然的，充满液滴的两相流环境中，液滴对机翼表面的影响的研究现状。讨论了潜在的流动物理学，危害，特征参数，液滴轨迹计算，液滴撞击动力学和影响。建立含滴流的控制方程式的最关键点在于对雨滴飞溅和水膜的建模。总结了影响坠落冲击动力学的各种因素以及坠落冲击对翼型气动性能的影响。最后，