七孔探针及其在叶栅二次流动测量中的应用

详细阐述了新研制的七孔探针（SHP）及其校准方法，利用亚声速风洞及自行设计的数据处理程序，获得了理想的各类无量纲参数的校准结果．依据校准结果，该七孔探针可以测量气流角与轴线偏离65。左右的复杂二次流动和旋涡流动．误差分析结果表明，校准实验能够保证气流速度和气流角的测量误差分别小于2．04％和1．99°．针对高负荷压气机平面叶栅出口截面气流角变化较大的复杂二次流动，利用该七孔探针能够得到比较准确可信的流场信息，为二次流模型的建立提供基础性的数据支持．

Seven-hole probe and its application in the secondary flow for a high-load compressor cascade

The design and calibration methods for a new type of seven-hole probe were described,and better calibration results were obtained in this paper with the help of a subsonic wind tunnel and self-designed code on data reduction.Based on suitable distribution for all the non-dimension parameters,it indicates that the probe is capable of measuring complex secondary and vortex flow with the angle more than 65°.The error analysis based on calibration data shows that the probe can measure the flow velocity and angle at a relative error of 2.04% and 1.99°,respectively.For the complicated secondary flow at outlet of a highly-loading compressor cascade,the detailed flow field information can be captured by the probe,contributing to build up the secondary flow model in compressor passage.