摘要
燃烧过程中气体温度和浓度的测量一直是研究的重要组成部分。论文提出了一种气体检测方法,采用了可调谐半导体激光吸收光谱技术,建立了气体温度和浓度测量系统,对水蒸气的浓度和温度进行了测量。根据最新的HITRAN2016数据库中的光谱参数,采用VOIGT函数的形式编写了一组程序,并考虑了压力和温度引起的频移,通过计算机程序获得了H2O的光谱吸光度;根据激光的扫描范围,对1392nm附近的水蒸气分子谱线进行筛选,找到适合测量温度和浓度的谱线对,通过数值仿真,验证了这对谱线在高温下的气体温度测量是有效的,测量误差在5%以内。因此,建立该仿真模型对TDLAS技术的研究具有重要意义。
The measurement of gas temperature and concentration in combustion process has always been an important part of research.Based on the application of tunable diode laser technology in gas detection,the molecular absorption spectroscopy system is established and the concentration and temperature of water vapor are measured.Based on the spectral parameters in the latest HI⁃TRAN 2016 database,a group of programs have been compiled,which adopt the form of VOIGT function and consider frequency shift caused by pressure and temperature.The spectral absorbance of H2O is obtained by the computer program.Based on the scan⁃ning range of the laser,the spectral lines of water vapor molecule near 1392nm are screened to obtain the suitable pairs of spectral lines for measuring temperature and concentration.The pairs of spectral lines are validated as gas temperature measurements at high temperature by numerical simulation.The measurement error is within 5%.Therefore,the establishment of the simulation model is of great significance to the research of TDLAS technology.
作者
成涛涛
张丕状
CHENG Taotao;ZHANG Pizhuang(Shanxi Prorincial Key Laboratory of Information Dotection and Processing,North University of China,Taiyuan 030051)
出处
《舰船电子工程》
2023年第12期119-123,共5页
Ship Electronic Engineering
关键词
TDLAS
温度测量
光谱参数
TDLAS
temperature measurement
spectral parameters
