超音轴向分速风扇/压气机叶栅流动特征分析

ANALYTICAL STUDY ON FAN/COMPRESSOR CASCADE FLOW CHARACTERISTICS WITH SUPERSONIC AXIAL VELOCITY COMPONENT

本文介绍了三种带冲波的超音轴向分速叶型设计,及其叶栅流场计算,分析了这些叶栅流场特征。在计算的反压条件下,全部波系均控制在槽道内,叶栅槽道内存在不同大小的轴向分速超音区,这种叶型叶栅可承受的增压比高,总压恢复系数较低,这类叶栅的性能和流动特征尚缺少实验数据和理论分析。

Three types of supersonic axial velocity blades with shock design are introduced.It also presents a calculation of the cascade flow field and an analysis of its features.under the calculated back pressure conditions,all the shocks are controlled within the passage and different supersonic axial velocity areas exist.It is proved that this kind blade can bear higher pressure with a high pressure ratio and a relatively low total pressure recovery efficiency,however,the performance and the flow characteristics of this type of cascade need to be further identified through experiment and calculation.