实验流体力学2025，Vol.39Issue(2)：46-53,8.DOI:10.11729/syltlx20210192
高超声速风洞稀薄流场转动温度和振动温度测量研究
Measurement investigation of rotational temperature and vibrational temperature in hypersonic wind tunnel rarefied flow field
陈爱国 1田颖 1王杰 1杨彦广 1李志辉 1李中华 1李震乾1
作者信息
- 1. 中国空气动力研究与发展中心,绵阳 621000
- 折叠
摘要
Abstract
The inconsistency of rotational temperature and vibrational temperature in the rarefied flow field is a concrete manifestation of thermodynamic non-equilibrium.The non-intrusive measurement method of rotational temperature and vibrational temperature in the rarefied flow field can be measured by the Electron Beam Fluorescence(EBF)technique.The basic principle and measurement method of EBF were introduced in this paper.Experiment was carried out in the Ma=12 and Ma=16 conical nozzle of the wind tunnel.The rotational temperature maximum relative uncertainty is 0.26%and the vibrational temperature maximum relative uncertainty is 0.8%from the analysis of repetitive measurement results.The distribution of rotational temperature and vibrational temperature on the exit section of the Ma=12 and Ma=16 conical nozzle reflects the characteristics of expansion flow of the conical nozzle.The measurement results of three states of each nozzle show that with the increase of rareness,the larger the deviation between the vibrational temperature and the rotational temperature is,the more prominent the thermodynamic non-equilibrium phenomenon appears.关键词
电子束荧光/稀薄流场/转动温度/振动温度/低密度风洞Key words
electron beam fluorescence/rarefied flow field/rotational temperature/vibrational temperature/low density wind tunnel分类
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陈爱国,田颖,王杰,杨彦广,李志辉,李中华,李震乾..高超声速风洞稀薄流场转动温度和振动温度测量研究[J].实验流体力学,2025,39(2):46-53,8.
