螺旋桨双排对转与单排旋转动力特性对比仿真研究  

Simulation Study on the Comparison of Dynamic Characteristics Between Contra-Rotating and Single-Rotating Propellers

作　　者：李修远 王定奇 LI Xiuyuan;WANG Dingqi(Engine Institute of Chinese Flight Test Establishment,Xi′an 710089,Shaanxi,China)

机构地区：[1]中国飞行试验研究院发动机所,陕西西安710089

出　　处：《工程与试验》2025年第1期25-29,共5页Engineering and Test

摘　　要：以某牵拉式对转螺旋桨为研究对象,使用三维数值仿真方法,根据桨叶旋转特征分区进行结构化网格划分。基于滑移网格方法,在不同进距比和不同桨叶角条件下,对前后排桨叶孤立旋转和双排对转两种状态分别开展动力特性仿真计算,分析前后排桨叶孤立做功与对转做功时动力特性的变化。研究结果表明,桨叶角是影响螺旋桨做功能力的关键参数,同时来流马赫数的增大与飞行高度的增加会降低螺旋桨做功能力。相较于孤立旋转,螺旋桨对转对前排桨叶的拉力系数和功率系数影响较小,而对后排桨叶做功能力提升明显,同时提升了后排桨叶效率。这主要是由于桨叶对转使后排进口气流攻角增大,桨叶高压区和低压区强度增大,高压区沿前缘向叶根扩展,导致后排桨叶做功能力增大。Taking a pull-type contra-rotating propeller as the research object,the three-dimensional numerical simulation method is used to divide the structured mesh according to the rotation characteristics of the blades.Based on the sliding mesh method,under different pitch ratios and different blade angles,the dynamic characteristics of the two conditions of isolated rotation of the front and rear blades,and contra-rotating of both rows of blades are simulated and calculated respectively,and the changes of the dynamic characteristics of the front and rear blades when doing work in isolation and contra-rotating are analyzed.The results show that the blade angle is the key parameter affecting the power capability of the propeller.Additionally,the increase of the inflow Mach number and flight altitude will reduce the power capability of the propeller.Compared with the isolated rotation,the contra-rotating propellers have a minimal impact on the tension coefficient and power coefficient of the front blades,but significantly improve the power capability and efficiency of the rear blades.The improvement is mainly due to the contra-rotating propellers increase the rear inflow angle,the strength of the high-pressure zone and the low-pressure zone of the blade increases,and the high-pressure zone expands along the leading edge to the blade root,resulting in an increase in the power capability of the rear blades.

关 键 词：动力特性 螺旋桨 流场仿真 结构化网格 仿真计算 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]