实验流体力学2025，Vol.39Issue(2)：30-37,8.DOI:10.11729/syltlx20240068
高温CO气体热非平衡效应的实验研究
Experimental study on thermal nonequilibrium effects of high-temperature CO
摘要
Abstract
Hypersonic technology is one of the key topics in aerospace and deep space exploration.The thermochemical nonequilibrium is one of the characteristics of hypersonic flows.CO is an important intermediate during hydrocarbon combustion and is the main radiation source during the entry processes of Mars and Venus.Studies on the CO thermal nonequilibrium effects are important to the above research.An interference-free Tunable Diode Laser Absorption Spectroscopy(TDLAS)technique was applied to the measurements of time-dependent rovibrational temperatures and thermal nonequilibrium effects for reflected-shock-heated CO mixtures in a kinetics shock tube.The measured data were compared with predictions based on the Landau-Teller model and the Schwartz-Slawsky-Herzfeld model.The model predictions agreed well with the measured data when adopting the modified relaxation data(including the CO-Ar system and the N2-N2 system)in the literature.Further analysis highlighted that the vibration-vibration-translation internal energy exchange mode yields consistent CO-Tvib and N2-Tvib.Therefore,for the 1.0%CO+99.0%N2 mixture,the measured CO-Tvib can be used to characterize the thermal nonequilibrium effects of high-temperature N2.关键词
化学激波管/TDLAS/振动温度/定量测量/转动温度/热非平衡效应Key words
kinetics shock tube/TDLAS/vibrational temperature/quantitative measurement/rotational temperature/thermal nonequilibrium effects分类
数理科学引用本文复制引用
何东,刘铁楼,李仁杰,李飞,司廷,罗喜胜..高温CO气体热非平衡效应的实验研究[J].实验流体力学,2025,39(2):30-37,8.基金项目
国家自然科学基金项目(12027801,12402274,12388101) （12027801,12402274,12388101）
中国科学院基础与交叉前沿科研先导专项(XDB0620201) （XDB0620201）
