论文部分内容阅读
对由常规直叶片、正倾斜叶片、复合倾斜 (S型 )叶片组成的三种矩型扩压叶栅在矩型叶栅低速风洞上进行了实验研究 ,详细测量了叶栅出口流场 ,研究和分析了零冲角下常规直叶栅、正倾斜叶栅、复合倾斜 (S型 )叶栅对出口能量损失分布情况和二次流速度矢量的影响 ,讨论了叶片倾斜对扩压叶栅出口流场的改善作用。
Three types of rectangular compressor cascades, consisting of conventional straight blades, forward inclined blades and composite inclined blades (S-type), were studied on a low-speed wind tunnel with rectangular cascades. The flow fields at the exit of cascades were measured in detail. The influence of the normal direct cascade, the positive cascade and the composite cascade (S-type) cascade on the outlet energy loss distribution and the secondary flow velocity vector at zero angle of attack were studied and analyzed. The effects of blade inclination on the diffuser cascade Exit flow field to improve the role.