基于滑流管模型的涵道螺旋桨快速计算与优化  

Fast calculation and optimization of ducted propeller based on slipstream tube model

作　　者：孙蓬勃 周洲[1] SUN Pengbo;ZHOU Zhou(School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]西北工业大学航空学院,西安710072

出　　处：《航空动力学报》2024年第12期343-353,共11页Journal of Aerospace Power

基　　金：陕西省自然科学基础研究计划(2022JQ-060)。

摘　　要：基于CFD的涵道螺旋桨计算方法在涉及迭代计算优化等工作时,所需计算资源较大。为降低此类工作在初步优化设计时的计算代价,发展了一种将面元法与螺旋桨滑流管尾迹模型耦合的涵道螺旋桨快速计算方法,并基于此方法开展了涵道风扇壁面外形快速优化设计。结果表明:发展的方法有效降低了计算资源需求,同时保留了较高的精度;发展的方法同样可应用于非圆进出口的涵道风扇快速计算;基于CFD的流场分析表明:优化后的涵道喷口扩张角减小,降低了喷口流动的逆压梯度,消除了原本存在的流动分离,并且降低了桨盘入流速度从而提高了其效率,使得涵道风扇整体推进效率提高了20.7%,说明了此套涵道风扇初步快速优化方法在寻找优化方向上的有效性。The computational method of ducted propeller based on CFD requires much more resources and long time when it involves works such as iterative calculation and optimization.In order to effectively reduce the computational cost of these kinds of work in preliminary optimization,a fast calculation method for ducted propeller was developed by coupling the surface panel method with the slipstream tube wake model,and fast optimization design for the duct wall shape of a ducted fan based on this method was carried out.The results showed that the method effectively reduced the computing resource requirement,while retaining high accuracy.The method can also be applied to fast calculation of ducted fans with non-circular inlet and outlet.The flow field analysis based on CFD showed that the expansion angle of the duct wall was reduced,the adverse pressure gradient of the duct wall was curtailed,the existing flow separation was eliminated,and the inlet velocity of the impeller was lowered down,thereby improving its efficiency and increasing the overall propulsive efficiency of the ducted fan by 20.7%.It demonstrated the effectiveness of the preliminary rapid optimization method of the ducted fan in finding the optimal direction.

关 键 词：涵道螺旋桨 面元法 滑流管 快速计算 优化 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]