摘要
在一套典型的低负荷矩形涡轮静叶栅中开展弯叶片影响叶栅内部流谱结构与气动性能的实验研究。利用微型5孔探针分别对6套叶栅的进出口流场进行详细测量,并在叶栅表面和端壁进行油流显示实验。从定性和定量的角度考察了叶片弯曲对壁面流谱拓扑结构、出口涡量、出气角及二次流损失分布的影响,总结了弯叶片影响边界层迁移与二次流损失发展的规律。
Experimental investigations of aerodynamic performance have been carried the dihedral influence on flow pattern structures and out in typical low-loaded rectangular turbine cas- cades. Detailed measurements using miniature five-hole probe at inlet and outlet and oil flow visu- alization on the surfaces of six sets of cascades and endwall have been performed. The dihedral in- fluences on flow pattern topology structure, vorticity, yaw and secondary flow loss at outlet were discussed on basis of the qualitative and quantitative analysis. Therefore, the influence rules of dihedral cascades on boundary layer migration turbine cascades have been proposed. and secondary flow loss development in this typical
出处
《实验流体力学》
CAS
CSCD
北大核心
2013年第1期46-51,共6页
Journal of Experiments in Fluid Mechanics
基金
国家自然科学基金(51106155)
国家973资助项目(2012CB720406)
关键词
弯叶片
低负荷
旋涡结构
拓扑
二次流损失
dihedral cascade
low-loaded
vortex structure
topology
secondary flow loss
作者简介
张华良(1978-),男,湖北荆门人,博士。研究方向:叶轮机械内部流动分离及控制方法。通讯地址:北京市北四环西路11号,工程热物理研究所(100190)。E-mail:zhanghl@iet.cn
通讯作者:谭春青(1963-),男,研究员,黑龙江哈尔滨人,主要研究领域为燃气轮机及通用流体机械气动热力分析与设计。