论文部分内容阅读
在试验条件不成熟和计算性能不够好的情况下,提出了一种研究螺旋桨气动性能的方法。首先对叶素周围的流场进行数值模拟,分析叶素的气动性能、得出叶素升阻系数,然后差值得到叶素升阻系数沿桨径的连续分布,再利用叶素理论对螺旋桨的整体气动性能进行分析。研究表明,本文的研究方法不仅可以对叶素周围流场进行详细的分析,还能够较好的分析螺旋桨整体气动性能。对本文研究的螺旋桨而言,来流马赫数为0.1时,螺旋桨会发生严重的气动分离,来流马赫数为0.3时,桨径上分离区变小。
In the case of immature experimental conditions and poor computational performance, a method to study the aerodynamic performance of propeller was proposed. Firstly, the numerical simulation of the flow field around the blade was carried out. The aerodynamic performance of the blade was analyzed to obtain the coefficient of resistance of the blade. Then the difference was obtained to obtain the continuous distribution of the blade drag coefficient along the blade. Then, the blade aerodynamic performance Analyze. The research shows that the research method in this paper can not only analyze the flow field around the leaf element in detail, but also analyze the overall aerodynamic performance of the propeller well. For the propeller studied in this paper, the severe aerodynamic separation of the propeller occurs when the Mach number is 0.1. When the Mach number is 0.3, the separation area on the propeller axis becomes smaller.