轴流风机转子通道内尖区三维流场

作     者：马宏伟 蒋浩康 聂超群 

作者机构：北京航空航天大学404教研室北京100083 北京航空航天大学动力系北京100083 

出 版 物：《工程热物理学报》 (Journal of Engineering Thermophysics)

年 卷 期：1998年第19卷第1期

页      面：45-48页

核心收录：

学科分类：080701[工学-工程热物理] 080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：国家攀登计划项目 国防科学基金 

主　　题：风机 转子 三维流场 LDV 叶轮机械 

摘      要：Turbulent flow field in the tip region of an axial-fiow fan rotor was measured using a3-D LDV(Laser Doppler Velocimetry). The flow was surveyed across the entire passage atseven axial locations (leading edge, 1/6 chord, 1/3 chord, 1/2 chord, 2/3 chord, 5/6 chordand trailing edge) and eight radial locations(0.983, 0.967,0.942, 0.917, 0.883,0.833, 0.750 and0.667 span). The data derived include all three components of mean velocity and turbulenceintensity. The measurement results indicated that the tip leakage vortex produces very nearthe leading edge, and it becomes strongest at the half chord, then decays rapidly. At theexit of the rotor passage, the leakage vortex exists in mid-passage. In the corner betweenthe casing wall and the pressure surface, the scraping vortex becomes stronger with the flowdownstream, leading to more substantial turbulence and blockage. The tip leakage vortexplays a leading role in the tip flow field of the rotor passage, producing most flow turbulenceand blockage.