Measurements of CO concentration distribution for Mars atmospheric entry by combining OES and TDLAS
文献类型：会议论文
| 作者 | Lin X(林鑫) ; Chen LZ; Ou DB; Li F(李飞); Yu XL(余西龙)
|
| 出版日期 | 2015 |
| 会议名称 | 3rd International Symposium on Laser Interaction with Matter |
| 会议日期 | NOV 02-05 2014 |
| 会议地点 | Nanjing PEOPLES R CHINA |
| 关键词 | optical emission spectroscopy tunable diode laser absorption spectroscopy shock wave temperature concentration |
| 通讯作者 | oudongbin@sina.com |
| 中文摘要 | Shock tube experiments are carried out to study the physical and chemical processes during a vehicle entry into the Mars atmosphere using optical emission spectroscopy and tunable diode laser absorption spectroscopy . Gas temperature and CO concentration distribution are diagnosed behind a shock wave in a CO2-N-2 mixture with two different conditions of initial pressure and velocity. The strong shock wave is established in a shock tube driven by combustion of hydrogen and oxygen. Time-resolved spectra of the Delta v = 0 sequence of the B-2 Sigma-> X-2 Sigma electronic transition of CN have been observed through OES. A precise analysis of the CN violet spectra is performed and used to determine rotational and vibrational temperatures. Two absorption lines in the first overtone band of CO near 2.33 mu m are selected from a HITRAN simulation to calibrate laser wavelength and detect the CO concentration. Combined with these temperature results using OES CO concentrations in the thermal equilibrium region are derived which are 2.91 x 10 cm and 1.01 x 10 cm corresponding to equilibrium temperatures equal to 7000 +/- 400 K and 6000 +/- 300 K in low and high pressure conditions respectively. |
| 收录类别 | CPCI-S ; EI |
| 会议网址 | http://dx.doi.org/10.1117/12.2180592 |
| 会议录 | THIRD INTERNATIONAL SYMPOSIUM ON LASER INTERACTION WITH MATTER
 |
| 会议录出版者 | SPIE-INT SOC OPTICAL ENGINEERING |
| 会议录出版地 | BELLINGHAM |
| 语种 | 英语 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/55368]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Lin X,Chen LZ,Ou DB,et al. Measurements of CO concentration distribution for Mars atmospheric entry by combining OES and TDLAS[C]. 见:3rd International Symposium on Laser Interaction with Matter. Nanjing PEOPLES R CHINA. NOV 02-05 2014.http://dx.doi.org/10.1117/12.2180592. |
入库方式： OAI收割
来源：力学研究所
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