Effects of Different Blade Angle Distributions on Centrifugal Compressor Performance

[摘要] A centrifugal compressor with three different shrouded 2D impellers is studied numerically. All impellers have the same dimensions, and they only differ in channel length and geometry. Noticeable differences in efficiency are observed. Two different turbulence models, Chien'sk-εandk-ωSST, are compared. For this case,k-ωSST was found more realistic. The hypothesis that pressure losses in a curved duct andin an impeller passage behave similarly is suggested and found inadequate.

[学科分类] 力学，机械学