不同高度端壁翼刀对压气机叶栅二次流影响的数值模拟  

Numerical Simulation of the Influence of Endwall Fence Height on the Secondary Flow in Compressor Cascade

作　　者：刘艳明[1] 钟兢军[1] 黄洪雁[1] 王松涛[1] 

机构地区：[1]哈尔滨工业大学能源学院,黑龙江哈尔滨150001

出　　处：《航空动力学报》2004年第6期828-833,共6页Journal of Aerospace Power

基　　金：国家自然科学基金资助项目(50076009);973项目;全国优秀博士学位论文作者专项基金资助项目(199932)

摘　　要：对CDA常规直叶栅和三种具有不同高度端壁翼刀压气机叶栅内三维粘性流场进行了数值模拟。计算结果表明,翼刀偏向吸力面一侧上方有反向翼刀涡产生;随着翼刀高度增加,对横向流动的阻断作用增强的同时,翼刀周围损失有所增加;1/3附面层厚度为加装翼刀的最佳翼刀高度,可使叶栅损失降低9%。实验与计算结果吻合较好。The numerical simulation has been carried out to investigate the effect of the endwall fence height on the secondary flow in compressor cascade. The results show that there is a counter-rotating streamwise vortex formed over the fence. With the increase of fence height, losses around the fence increase and the strength of crossflow decreases. The optimal fence height is 1/3 of the inlet boundary layer thickness, which can reduce the total energy loss by 9%. The computation and test results agree well.

关 键 词：航空、航天推进系统 端壁翼刀 压气机叶栅 二次流 叶栅损失 

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]