Research on droplet impingement property of rotor blade in hover
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摘要: 介绍了直升机在悬停状态下,求解旋翼水滴撞击特性的数值方法.该方法根据直升机悬停状态下的准定常特性,对旋翼运动模型进行简化,并在对绕桨叶运动的气流场计算的基础上,采用有限差分方法求解水滴运动方程,得到水滴运动轨迹.进而,确定了水滴对旋翼表面的撞击特性参数,为旋翼防冰系统设计提供条件.最后,对NACA0012翼型的水滴撞击特性进行分析.Abstract: The numerical method of determining the water droplet impingement property of rotor blade in hover was studied. According to the quasi-steady property, the rotor's model in hover was simplified. Based on the calculation of flow field around the blade, the droplet trajectories were obtained through the difference method. And then, the parameters of droplet impingement on blade were given, which provided the conditions for rotor anti-icing/deicing system design. Finally, the impingement properties of NACA0012 were presented as an example.
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