叶片周向弯曲角度对扩压叶栅气动性能的影响  

Effects of circumferential bow angle of curved blade on the performance of compressor cascade

作　　者：杨科[1] 王会社[1] 钟兢军[1] 王仲奇[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工业大学学报》2002年第4期459-463,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目 ( 5 0 0 760 0 9) ;973(G19990 2 2 3 0 7) ;全国优秀博士学位论文作者专项基金资助项目 ( 19993 2 )

摘　　要：为了改善扩压叶栅气动性能 ,采用拟压缩性方法对不同周向弯曲角度的正弯曲叶片压气机叶栅内三维粘性流场进行了数值模拟 .结果表明 ,随着弯曲角度的增加 ,端部流动状况逐渐得到改善 ,叶栅中部流动损失逐渐增加 .正弯 2 0°时可基本控制端部扩压因子至 0 .6以下 .叶片弯曲角度的选择应以能满足设定目标的最小角度为最佳 。The numerical simulation is carried out to investigate the viscosity flow in compressor cascades with curved blades of different circumferential bow angles. The pseudo-compressibility method was used and the incompressible Navier-Stokes equations were solved. The results show that the performance of the blade end regions can be improved compared with the linear blade with the increase of the bow angle of positive curved blade. When the bow angle is 20 degrees, the diffusion factor is under 0.6 along the blade height. The blade bow angle is the best if it is the smallest on a given condition, because a bigger angle can result in a matching difficulty between rotor and static blade and a big reverse flow in blade trailing edge.

关 键 词：扩压叶栅 气动性能 弯曲叶片 压气机 拟压缩方法 周向弯曲角度 数值模拟 

分 类 号：TH45[机械工程—机械制造及自动化]