轴流风机叶片顶部间隙流动的测量与研究

Study of Tip Clearance Leakage Flow in the Impeller of Axial Fan

本文采用热丝风速仪和计算机辅助采样技术,对可逆轴流风机叶片顶部间隙的流场进行了测量,探讨了间隙泄漏流动随轴向位置及工况改变的变化规律,以及间隙的大小对风机性能的影响。

In the paper the hot wire anemometers and the computer sampale ensemble averaging method are used to measure the flow field in the tip clearance region of a reversible axial fan. The relation of leakage flow with the work condition and the axial set of measure point and the influence of tip clearance on the performance of the fan are studied in the paper.