等环量线旋翼尾迹生成的广适性方法

不同飞行状态下,旋翼尾迹特性是有差别的,有时还很大。数值计算模拟的尾迹结构不够,将难以获得收敛解。针对旋翼复杂尾迹处理的难度,本文提出了一套独特的等环量线旋翼尾迹生成方法,该方法突破了一般方法对旋翼桨叶展向多环量峰分布所做的限制,能够处理旋翼桨叶展向多环量峰复杂分布的情况,具有适用性广的特点。大量算例结果表明,本文所发展的方法是有效的,可以处理比较宽的飞行参数下的旋翼尾迹,并获得满意的结果。

A comprehensive method for the generation of constant vorticity contours wake

The characteristic of the rotor wake in different flight state is discriminatory,sometimes very large.If the numerical computation is not enough to simulate the structure of rotor wake,it will be difficult to obtain a convergent solution.In allusion to the difficulty for dealing with the complex rotor wake,a set of process about the generation of constant vorticity contours is presented in this paper.With some breakthroughs on the limitations of multi-peak circulation distribution,this method can deal with complex circulation distribution on the blade,so it can be applied to a wide range of conditions.Large numbers of the results of the calculative examples indicate that the method presented in this paper is effective,and able to dispose the rotor wake in wide flight parameters and get a satisfactory result.