圆柱单孔高频压力探针测量高亚音速二维周期流场的方法

A METHOD FOR MEASURING HIGH-SUBSONIC TWO-DIMENSIONAL PERIODIC FLOW FIELD USING A SINGLE-HOLE HIGH-RESPONSE CYLINDRICAL PRESSURE PROBE

本文详细介绍了作者发展的圆柱单孔高频压力探针测量高亚音速二维周期性流场的方法。该方法简化了压缩性影响的修正 ,测量时置探针于九个方位角。它已被成功地应用于单。

This paper presents in detail a method for measuring high subsonic two dimensional periodic flow field with a single hole cylindrical pressure probe with high frequency response.The method normalizes the probe calibration curves at different Mach number and simplifies the compressibility correction.The probe is set in nine azimuthal angles while measuring the flow.Sampled and averaged data are used to determine flow angles by least square fitting, Mach number and stagnation pressure are then obtained from solving a set of non linear equations.The method has been successfully applied to measuring the rotor exit flow field in a multistage compressor with high accuracy.