论文部分内容阅读
为了深入认识低速大尺度轴流压气机端壁区的流动,减小流动损失,提高其气动性能,采用数值模拟和优化相结合的手段,针对用于低速模拟的某低速大尺度轴流压气机原型转子的三维积叠线进行了优化,提高了其设计工况下的气动性能.结果表明:优化转子轮毂附近无法承受过大的负荷;相比于原型转子,优化转子主要的性能提升位于轮毂附近,一定程度的正弯有效减小了轮毂区的流动损失,具有“前加载”的效果,抑制了叶根尾缘的流动分离,转子总压损失减小约19.4%.
In order to understand deeply the flow in the endwall area of low-speed and large-scale axial flow compressor, reduce the flow loss and improve the aerodynamic performance, a numerical simulation and an optimization method are combined in this paper. In view of the low-speed large-scale axial-flow compressor The three-dimensional laminar line of the prototype rotor is optimized to improve its aerodynamic performance under the design conditions.The results show that the optimized rotor hub can not bear the excessive load nearby.Compared with the prototype rotor, the main performance improvement of the optimized rotor is located on the hub A certain degree of positive bending reduces the flow loss in the hub area effectively and has the effect of “front loading ”, restraining the flow separation of the trailing edge of the root and reducing the total pressure loss of the rotor by about 19.4%.