高温二氧化碳气体红外辐射实验研究

主要介绍了依托高频等离子体风洞建立的高温气体辐射测量平台，并在此平台上开展了高温二氧化碳气体红外辐射实验测量。介绍了高频等离子体风洞的运行原理、流场特性及工作介质;介绍了实验测量的条件、装置、标定、数据处理方法和结果分析;通过自建的高温气体发射光谱测量平台实验测量了二氧化碳气体在1 500～3 000 K范围内4个温度点的红外发射光谱；介绍了Abel变换在测量二氧化碳气体红外辐射空间分布中的应用，通过Abel变换获得了高温下二氧化碳气体红外辐射的空间分布结果; 分析了高温二氧化碳气体在4.3 μm附近的红外辐射的强度及其中心波长随温度变化的分布，得到了发射峰中心波长随温度的升高向长波方向展开的结果，并与文献结果进行了对比分析。

Inf rared Radiation Experimental Measurement and Analyse of Carbon Dioxide at High Temperature

This paper introduces the experiment technology for measuring the radiation of high temperature gas in the high frequency plasma wind tunnel. The infrared radiation of carbon dioxide at high temperature has been measured using this technology. We introduced the principium，flow field and the working gas of the high frequency plasma wind tunnel. The experiment condition, equipment, method of data processing and the analyse of the experiment results were introduced. We had measured the infrared radiation of carbon dioxide at four different temperatures between 1 500 and 3 000 K using this technology for measuring the radiation of high temperature gas which had been developed by ourselves. Measuring the spatial distribution of the infrared radiation of carbon dioxide using Able-transform were also introduced. We have analyzed the emission spectrum at 4.3 μm of carbon dioxide at high temperature. The conclusion had been obtained that the center wavelength of the emission spectrum moved to the long wave when the temperature risen. The authors also had analyzed and contrasted the experiment results and the data obtained from literatures.