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采用基于N-S方程的CFD方法,通过计算前后平行放置的双翼和三翼的干扰流场,对悬停状态旋翼桨叶之间的气动干扰机理进行了数值探讨;在此基础上,进行了2种桨叶片数、2种桨距及2种桨尖马赫数情况的旋翼悬停流场对比计算,模拟它们对旋翼气动性能和桨叶间气动干扰作用的影响,得到一些与工程实际吻合的现象和结论。
The CFD method based on Navier-Stokes equations is used to study the aerodynamic interference mechanism between the rotor blades in hovering state by calculating the interference flow field between the two wings and the three wings placed in parallel before and after. Based on this, The number of blades, the pitch of two kinds of propeller and the Mach number of two kinds of blades are compared to simulate their influence on the aerodynamic performance of the rotor and the aerodynamic interference between the blades, and some phenomena that are consistent with the engineering practice are obtained. in conclusion.