尾缘对开缝喷气对栅后二次流发展的影响  

The Effects of Turbine Blade with Trailing Edge Ejection on the Development of Secondary Flow at the Downstream

作　　者：王掩刚[1] 刘波[1] 梅运焕[1] 曹志鹏[1] 

机构地区：[1]西北工业大学,陕西西安710072

出　　处：《流体机械》2002年第4期14-16,19,共4页Fluid Machinery

基　　金：国家自然科学基金项目 (5 99760 3 2 )

摘　　要：采用数值模拟手段研究了涡轮叶片尾缘对开缝喷气栅后二次流的影响 ,给出了在设计工况下有、无喷气时栅后二次流影响。结果表明 ,喷气对栅后涡的形成和发展影响不大 ,而使主流区径向分量较大的区域产生漂移 ,并使该区域的二次流结构发生变化。The development of secondary flow at the downstream of turbine cascade with ejection from symmetry slot of trailing edge was investigated by numerical approach. The results of the design condition with ejection/(no ejection) show that ejection has little effects on the development of downstream vortex. The field float where the radial ponderance of secondary flow is bigger was made and the secondary flow structure in this field was changed.

关 键 词：射流 二次流 航空发动机 数值模拟 涡轮叶片尾缘 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]