离心通风机旋转失速的特征分析

Characteristic Analysis on Rotating Stall of Centrifugal Fan

对采用进口导流器调节的离心通风机的旋转失速问题进行了试验研究,并借助谐波小波对旋转失速的频率、幅值特性及动态过程进行了时频分析和特征提取,揭示了旋转失速发展的规律及对风机性能的影响。

Test and re.arch is carried out on the problem of rotating stall for centrifugal fan regulating with inlet guide vane, furthermore, time-frequency analysis and characteristic extraction using Harmonic Wavelet is carried out on characteristic of frequency and range and development of rotating stall, developing rule of rotating stall and effect of fan performance is revealed.