两级低速轴流压气机的喷气实验的非定常响应  

UNSTEADY RESPONSE TO THE TIP INJECTION IN A LOW-SPEED AXIAL COMPRESSOR

作　　者：徐纲[1] 程晓斌[1] 聂超群[1] 陈静宜[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100080

出　　处：《工程热物理学报》2002年第1期27-30,共4页Journal of Engineering Thermophysics

基　　金：国家973项目资助(No.G1999022306)

摘　　要：在轴流压气机的顶部实施了微量喷气来抑制失速，喷气量为压气机流量的 ０．５‰．如此微量的喷气不足以通过稳态方式来改变流动结构，而是通过改变压气机的非定常边界的方法对系统的稳定性产生影响．实施微量喷气后压气机的稳态特性没有发生变化．实验比较了不同的喷射攻角的失速抑制效果并采用常规方法对相应的周向动态压力信号进行了分析．Micro-scale air injection had been executed on the tip clearance region in front of the compressor rotor. The mass flow of the injection was on the order of 0.5 %o of the main flow of the compressor. While the steady characteristic of the compression system had been kept unchanged by the injection, the evidences of the unsteady response of the system to the injection could be manifested. These effects were analyzed under the experiment of various injection angles and through the observation of stall and its inception characteristics obtained by the dynamic pressure measurement and DSP procedures.

关 键 词：旋转失速 主动控制 喷气实验 非定常响应 两级降速轴流 压气机 

分 类 号：TH453[机械工程—机械制造及自动化] O35[理学—流体力学]