Influence Factors on the Radiation Temperature Measurement Accuracy of Turbine Blades  

作　　者：LI Xunfeng YAN Hao ZHAO Shu'nan CHENG Keyong CHEN Junlin HUAI Xiulan 

机构地区：[1]Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing,100190,China [2]School of Engineering Science,University of the Chinese Academy of Sciences,Beijing,100049,China [3]Nanjing Institute of Future Energy System,Nanjing,211135,China

出　　处：《Journal of Thermal Science》2025年第2期510-523,共14页热科学学报(英文版)

基　　金：supported by the Scientific Instrument Developing Project of the Chinese Academy of Sciences(Grant No.YJKYYQ20200016);the National Science and Technology Major Project of China(Grant No.J2019-V-0006-0100)。

摘　　要：Backward Monte Carlo method of the complicated and exact three-dimensional turbine with the spectral emission and reflection characteristics of the turbine blades materials and the spectral absorption and emission characteristics of combustion gas is established.The factors affecting the accuracy of the radiation temperature measurement are analyzed.The results show that reducing the distance from the probe to the target surface can reduce the effect of the environment on the measurement accuracy.Increasing the temperature and emissivity of the target surface can improve the measurement accuracy.The reflection characteristics of the surfaces have little influence on the radiation temperature measurement,so the blades can be considered as diffuse reflectors in order to improve the calculation efficiency.The temperature measurement accuracy decreases rapidly as the temperature of the combustion gas increases.The temperature measurement accuracy decreases with the increase of total gas pressure and H_(2)O concentration.When measuring the temperature of rotating blades,the apparent emissivity of the target surface is inversely proportional to the measurement accuracy.

关 键 词：Monte Carlo method turbine blade radiation temperature measurement ACCURACY 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]