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本文总结了测量轴流压气机失速喘振工况及端壁边界层流场时所采用的方法,并提供若干典型结果。大量试验表明这些方法行之有效。用三支同型探针,沿周向不等间隔分布,失速喘振时,用频谱分析确定频率成分,用互相关分析确定两两信号的时差,即可判明是失速或喘振,并决定团数、团的传播速度及团的形状。用单丝旋转法测量端壁边界层以保证所测参数严格属于同一半径,同时又具有 X 型探针的二维能力,以测定速度矢量,湍流度及雷诺应力,在此测量中我们研究了机匣探针孔对边界层流场的干扰问题。灰尘油污的污染,气流温度随压气机工况的变化是遇到的主要问题。
This paper summarizes the methods used to measure the surge condition of the axial flow compressor and the flow field at the boundary layer of the axial flow compressor, and provides some typical results. Numerous experiments show that these methods work well. With three identical probes, unequal spacing along the circumferential distribution, stalling surge, the frequency spectrum analysis to determine the frequency components, cross-correlation analysis to determine the time difference between the two signals, you can determine the stall or surge, and decide the mission Number of groups, the speed of communication and the shape of the group. The monolayer spin method was used to measure the boundary layer of the end wall to ensure that the measured parameters strictly belong to the same radius and the two-dimensional ability of the X-type probe to measure velocity vector, turbulence and Reynolds stress. In this measurement, we studied Interference problem of receiver probe hole on boundary layer flow field. Dust oil pollution, airflow temperature changes with the compressor operating conditions are the main problems encountered.