论文部分内容阅读
PSP(Pressure Sensitiive Paint)测量技术以不改变叶片表面结构及可以进行全域压力测量的独特优势而受到广泛关注,但是受到几何结构的限制,有关内流场的PSP测量实验难度非常大。本文对ISSI公司所生产PSP测量系统开展了校准试验,完成了三个来流马赫数下叶栅叶片吸力面上静压分布的测量,并与传统压力扫描阀测量结果进行了定量比较。结论如下:(1)校准试验表明测量系统性能对PSP校准曲线有一定影响,为叶栅风洞内压力测量提供了参考;(2)测量系统大小对内流场测量光路布置影响很大:PSP测量系统体积较小,能够提供更多的光路选择;(3)三个马赫数下叶片表面压力分布表明,压力分布图像质量好,基本无噪声暗点,同时与传统压力扫描阀结果定量相比,两者之间最大测量误差低于4.4%。
PSP (Pressure Sensitiive Paint) measurement technique has not been changed the leaf surface structure and the unique advantages of global pressure measurement. However, due to the limitation of the geometric structure, the PSP measurement experiment about the internal flow field is very difficult. In this paper, the calibration test was carried out on the PSP measurement system produced by ISSI Company. The static pressure distribution on the suction surface of the cascade vanes at three Mach Mach numbers was completed and the results were compared with those of the conventional pressure sweep valve. The conclusions are as follows: (1) The calibration test shows that the performance of the measurement system has some influence on the PSP calibration curve, which provides a reference for the pressure measurement in the wind tunnel of the cascade. (2) The size of the measurement system greatly affects the optical path arrangement of the internal flow field measurement: PSP (3) The pressure distribution on the blade surface at three Mach indicates that the image of the pressure distribution is of good quality with almost no noise and dark spots. Compared with the results of the conventional pressure-scan valve, the measurement system is smaller in volume and can provide more optical path selection. , The maximum measurement error between the two is less than 4.4%.