Topology and Vortex Structures of Turbine Cascade with Different Tip Clearances

作     者：韩万金 杨庆海 黄洪雁 贾琳 Han Wanjin;YANG Qinghai;HUANG Hongyan;JIA Lin

作者机构：Academy of Energy Science and Engineering Harbin Institute of Technology Harbin 150001 China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2002年第15卷第1期

页      面：18-26页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0801[工学-力学（可授工学、理学学位）] 

基　　金：ScientificResearchFoundationofHarbinInstituteofTechnology(HIT .2 0 0 0 .74) NationalDoctoralEducationFoundation 

主　　题：turbine cascade blade tip clearance flow visualization topology andvortex structures 

摘      要：This paper uses the topology theory to analyze the surface flowspectrums of straight, positively curved and negatively curvedcascades with relative tip clearances of 0.023 and 0.036, findsapparent differences of topology and vortex structures in the bladetip and the suction side wall corner of single type of cascade withthis two clearances, and studies the mechanism of the differenceformation as well as their effects o the energy loss.