关键词: 压气机叶栅, 二次流, 损失分布, 出气角

Abstract:

The loss distribution and the span-wise variations of flow angle at the outlet section of a linear compressor cascade are presented in this paper. The secondary vortices and the corner separation between the end-wall and suction surface of the blade make the stream surfaces warped and twisted rather obviously. A loss core is mainly attributed to the formation of corner separation. The comparison between the values of spanwise variations of outlet angle with an inviscid secondary flow theory and those by measurement is approximated.

Key words: compressor cascade, secondary flow, loss distribution, outlet flow angle