反应进度对燃气分析法测温系统误差的影响  

Effect of reaction progress on temperature measurement system error of gas analysis method

作　　者：李昊 刘勇[1] 张祥 杨晨 刘重阳 LI Hao;LIU Yong;ZHANG Xiang;YANG Chen;LIU Chongyang(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;School of Power and Energy,Northwestern Polytechnical University,Xi’an 710072,China;Sichuan Gas Turbine Establishment,Aero Engine Corporation of China,Mianyang Sichuan 621500,China)

机构地区：[1]南京航空航天大学能源与动力学院,南京210016 [2]西北工业大学动力与能源学院,西安710072 [3]中国航发四川燃气涡轮研究院,四川绵阳621500

出　　处：《航空动力学报》2025年第1期164-172,共9页Journal of Aerospace Power

基　　金：中国航发集团自主创新专项资金(ZZCX-2018-021);航空发动机及燃气轮机重大专项基础研究项目(J2019-Ⅴ-0005-0097)。

摘　　要：基于焓值守恒法计算燃气温度的误差通常认为来源于直接测量和高温分解的影响,在某型高温升燃烧室的测试中发现:高温环境下以热电偶测量结果作为参考标准来评价燃气分析法的性能会引入较大响应误差,因此采用Sandia实验室的湍流火焰数据作为参考标准对各测点温度进行对比分析。结果显示焓值守恒法计算的温度与实验中测量的温度整体平均误差较小,但是在反应初始区域以及燃烧区域出现较大误差。进一步研究发现:燃气分析法测温不确定度主要来源于反应进度,采用反应进度变量能够对温度计算结果的不确定度进行量化,进而对燃气分析测温法的适用范围进行判断和限定,为进一步研究焓值守恒测温法在湍流火焰和发动机燃烧室测温中的应用以及不确定度评估提供了参考依据。It is generally believed that the error of gas temperature calculation based on enthalpy conservation method is caused by the error of direct measurement and the influence of high temperature decomposition.However,in the experiment of a certain high temperature combustion chamber,it was found that,taking thermocouple measurement results as the reference standard to evaluate the performance of gas analysis method under high temperature environment may introduce a large response error,so the turbulent flame experimental data of Sandia laboratory were used as reference standard to compare and analyze the temperature of each measuring point.The results showed that the overall average error of the temperature calculated by the enthalpy conservation method was small compared with the temperature measured in the experiment,but there were large errors in the initial reaction region and the combustion region.Further research found that:the uncertainty of temperature measurement in gas analysis was mainly derived from reaction progress.The uncertainty of temperature calculation results can be quantified by using reaction progress variable,and the applicable range of gas analysis method can be judged and limited,providing a reference for further research on the application of the enthalpy conservation temperature measurement method in the temperature measurement of turbulent flame and engine combustion chamber and the evaluation of uncertainty.

关 键 词：燃气分析测温 焓值守恒 反应进度变量 系统误差 湍流火焰 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程]