实验流体力学2025，Vol.39Issue(2)：15-22,8.DOI:10.11729/syltlx20220101
基于吸收/发射光谱的火星进入地面模拟流场特性研究
Absorption/emission spectra diagnosis in ground-based experimental simulation for Mars entry
摘要
Abstract
Simulation of the aerothermal environment for Mars entry by the arc-heated plasma wind tunnel is a key to develop the Thermal Protection System(TPS),since the thermal environment for Mars entry is very different from that of earth reentry.In this study,in-situ quantitative measurements of the radiation characteristics of CO2 plasma and the flow parameters of the simulating freestream for Mars entry were carried out by using emission spectroscopy and mid-infrared quantum cascade laser absorption spectroscopy.The electron temperature of the CO2 plasma in the arc heater and the static temperature and CO concentration in the freestream were obtained.The emission spectroscopy and laser absorption spectroscopy measurements show that the arc heater has good stability for long-term operation and a capability for repeatable simulation of the flow parameters.The developed spectral diagnostic technology in this study provides an effective measurement method for studying the flow characteristics of the Mars entry aerothermal environment.关键词
火星进入地面模拟/电弧加热器/发射光谱/中红外吸收光谱/气流温度/组分浓度Key words
experimental simulation for Mars entry/arc heater/emission spectroscopy/mid-IR laser absorption spectroscopy/gas temperature/mole fraction分类
数理科学引用本文复制引用
曾徽,文鹏,杨国铭,朱兴营,欧东斌..基于吸收/发射光谱的火星进入地面模拟流场特性研究[J].实验流体力学,2025,39(2):15-22,8.基金项目
国家自然科学基金项目(11802299) （11802299）
