PSE方法在后部加载叶栅绕流稳定性分析及转捩预测中的应用  

Application of PSE method into aft-load cascade boundary stability analysis and transition prediction

作　　者：董学智[1] 颜培刚[1] 韩万金[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《航空动力学报》2007年第9期1492-1498,共7页Journal of Aerospace Power

摘　　要：采用数值求解与实验测量相结合的方法,分析后加载叶栅绕流的稳定性并预测转捩.推导出正交曲线坐标系下三维扰动波的抛物化稳定性方程,在风洞实验中测量叶栅叶片表面的静压分布,并结合测量结果对设计叶栅的流动稳定性进行特征值分析.分析结果表明:(1)后加载叶型能有效推迟转捩,提高叶栅的变冲角特性;(2)当冲角变化时叶顶流动稳定性的变化最显著,负冲角流动稳定,正冲角流动最不稳定.The stability and transition of aft-load blade was analyzed and predicted by combining numerical calculation and experimental measurement. Parabolized stability equation （PSE） of 3D disturbance wave was deducted under orthogonal curvilinear coordinates. The static pressure distribution on blade surface was measured in wind tunnel test, and result was used for analysis of blade＇s flow stability. The results show that. （1） aftblade can delay efficiently the transition and enhance the variable incidence of blade; （2） positive incidence is most unsteady and negative incidence is most steady in the event of nificant change of flow characteristics of blade tip.

关 键 词：航空、航天推进系统 边界层流动 稳定性 转捩 后部加载叶型 PSE方法 

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]