PIV Study of Tip Leakage Flow in Linear Compressor Cascade

摘要：

Tip leakage flow between axial fan rotor and casing plays an important role in the aerodynamic performance of the fan. One of the new techniques to control tip leakage is developed as tip winglet which is also named as partial shroud in turbine cascade. Based upon NACA65-010 airfoil, it is proposed in this paper a linear cascade model to investigate the tip leakage flow patterns with and without blade winglets. Uniform width winglet is chosen for comparing the effect of different winglet orientations under alternative tip clearance conditions. Flow structures obtained from PIV measurements showed that tip winglet can not change the fundamental leakage flow structure. Its main effort is to provide extra flow resistance to the leakage flow which i alleviates leakage flow to limited extent.

关键词： tip leakage flow tip winglet linear cascade

作者: Ren Dai Zhonghua Huang Ze Chen Kangmin Chen

作者单位: College of Power Engineering, University of Shanghai for Science and Technology JunGong Road 516, Shanghai 200093, China

会议类型: 国际会议

会议名称: The Fourth International Symposium on Fluid Machinery and Fluid Engineering(第四届流体机械与流体工程国际会议)

会议地点: 北京

会议语种:英文

页码: 173-178

在线出版日期: 2008-11-25（万方平台首次上网日期，不代表论文的发表时间）