Experimental investigation on static/dynamic characteristics of a fast-response pressure sensitive paint

作     者：Ruiyu LI Limin GAO Tianlong ZHENG Guanhua YANG 

作者机构：School of Power and Energy Northwestern Polytechnical University Xi'an 710072 China Collaborative Innovation Center of Advanced Aero-Engine Beijing 100083 China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2018年第31卷第6期

页      面：1198-1205页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 0802[工学-机械工程] 0825[工学-航空宇航科学与技术] 0801[工学-力学（可授工学、理学学位）] 

基　　金：cosupported by the ‘‘111 Project” of China (No.B17037) Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University of China (No.CX201713) the National Natural Science Foundation of China (No.51476132) 

主　　题：Dynamic calibration Pressure measurement Pressure sensitive paint Signal processing Unsteady flow 

摘      要：An optical-based technique using Pressure-Sensitive Paint（PSP） is a promising method to measure the distribution of surface pressure on an aerodynamic model. The static and dynamic characteristics of a fast-response PSP that is developed in the Chinese Academy of Sciences（CAS）are analyzed and tested to serve as the basis for experiments on unsteady surface measurement using a fast-response PSP. Two calibration systems used for this study are set up to investigate the temperature dependency, response time, and resolution. A data processing method, used for dynamic data, is analyzed and selected carefully to determine the optimum signal. Results show that the fastresponse PSP can be used normally at temperatures from 25 ℃ to 80 ℃. The effect of temperature on the accuracy of the measurement must be considered when temperatures are beyond the temperature range of 30–40 ℃. The dynamic calibration device with a solenoid valve can achieve a pressure jump within a millisecond order. The resolution is determined by the signal-to-noise ratio of the photo-multiplier tube. Results of the measurement show that the response time of the PSP decreases with a large pressure variation, and the response time is below 0.016 s when the pressure variation is under 40 kPa.