光学压力敏感涂料测量技术及其在内流场的应用

介绍了应用基于发光强度的全域压力测量方法进行叶片表面压力分布的一系列实验结果.在自主建立光学压力测量系统和自主研发国产压力敏感涂料的基础上,对高亚声速叶栅风洞出口处大弯度孤立叶片吸力面和对转压气机实验平台出口整流叶片吸力面的压力分布进行了测量,并采用传统电子静压扫描装置在高亚声速叶栅风洞中进行了同步测量.光学压力测量与电子压力扫描结果的对比表明所建立的光学压力测量系统可用于内流场测量,其精度达到了工程应用水平.

Application of optical pressure sensitive paint measurement technique in internal flow fields

A series of experimental pressure measurements inside internal flow fields employing the intensity-based method of pressure sensitive paint technique were depicted based on self-established optical pressure measurement system and indigenously developed pressure sensitive paint.These experimental measurements include the applications inside both the transonic cascade wind tunnel and the nationally unique axial dual counter-rotate compressor facility (ADCCF) of Northwest Polytechnical University (NPU).The test articles involved a single vane of a large bending angle in transonic cascade wind tunnel and the oriented vane inside ADCCF,and both the surfaces of interest were correlated with the suctions.The traditional pressure measurement using electronic pressure scanning has been simultaneously conducted in the cascade wind tunnel for comparison.The contrast of both results from optical pressure measurement and electronic pressure scanning has revealed that the feasible application of optical pressure measurement system in internal flow fields and in practical industrial engineering.