多级环境风扇静叶优化  

Numerical Optimization of Fan Stator under the Multistage Circumstances

作　　者：靳允立[1] 胡骏[1] 

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《燃气涡轮试验与研究》2007年第4期22-27,共6页Gas Turbine Experiment and Research

摘　　要：对某三级风扇静叶在全三级环境中进行了数值优化。原叶型的流场计算结果显示,第二级静叶根部通道涡的存在及其诱发的第三级静叶根部分离,制约了三级风扇性能的提高。运用弯叶片技术对第二级静叶进行优化,并借助NUMECA软件的Design3D软件包参数寻优。优化后所获得的根部正弯、顶部反弯叶型有效地抑制了第二级静叶根部通道涡的形成,消除了第三级静叶根部的分离区。优化后风扇的效率和稳定裕度有了大幅提高,而压比基本不变,优化前稳定边界线上的一个明显下陷点被抹平。Numerical optimization had been carried out to improve the performance of a three stage fan under full three stage circumstances. 3-dimentional numerical simulation on flow field indicated that there was a passage vortex in the corner near the hub of the second stator. The method of curved blades was applied to restrict the development of the passage vortex. The results show that the optimized curved stator can effectively improve flow performance near hub, weaken the intensity of passage vortex. The operating range was extended and the efficiency was increased after optimization.

关 键 词：风扇 数值优化 弯曲静子叶片 通道涡 

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]