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基于动量源方法建立了针对双拉力螺旋桨构型(X3构型)复合式高速直升机旋翼/螺旋桨干扰流场分析的一个高效数值模拟方法,该方法适用于旋翼/螺旋桨之间相互干扰的计算与分析。在该方法中,旋翼和螺旋桨分别使用动量源代替,对干扰流场采用结构化网格进行划分。首先,进行了孤立旋翼、孤立螺旋桨、旋翼/机身干扰流场的算例计算验证了方法的有效性。然后,应用所建立的方法,着重进行了悬停及前飞状态下双拉力螺旋桨构型复合式高速直升机旋翼/螺旋桨干扰流场的数值模拟,分析了直升机迎角变化对前飞流场的影响,得到了一些关于旋翼/螺旋桨干扰流场的有意义的结论。
Based on the momentum source method, an efficient numerical simulation method for the rotor / propeller interference flow field of a composite high-speed helicopter with twin-pull propeller configuration (X3 configuration) is established. The proposed method is suitable for the calculation and analysis of rotor-propeller mutual interference . In this method, the rotor and the propeller are respectively replaced by a momentum source, and a structured grid is used to divide the interference flow field. First of all, an example calculation of isolated rotor, isolated propeller, rotor / fuselage interference flow field is carried out to verify the effectiveness of the method. Then, with the established method, the numerical simulation of the rotor / propeller interferential flow field of the double-lift propeller-type hybrid high-speed helicopter with hovering and forward flight was emphatically carried out, and the influence of helicopter angle of attack change on the front flight field was analyzed , Some meaningful conclusions about the rotor / propeller interference flow field were obtained.