| Measurements of non-equilibrium and equilibrium temperature behind a strong shock wave in simulated martian atmosphere | |
Lin X ; Yu XL(余西龙); Li F(李飞); Zhang SH(张少华); Xin JG; Zhang XY(张新宇); Yu, XL; Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
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| Source Publication | ACTA MECHANICA SINICA
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| 2012-10-01 | |
| Volume | 28Issue:5Pages:1296-1302 |
| ISSN | 0567-7718 |
| Abstract | Non-equilibrium radiation measurements behind strong shock wave for simulated Martian atmosphere are presented in this paper. The shock wave is established in a hydrogen oxygen combustion driven shock tube. Timeresolved spectra of the Delta v = 0 sequence of the B I-2 (+) pound -> X I-2 (+) pound electronic transition of CN have been observed through optical emission spectroscopy (OES). A new method, which is based on fitting high resolution spectrum for rotational and vibrational temperatures measurement, is proposed to diagnose temperature distribution behind the shock wave. It is estimated that the current scheme has the maximum deviation less than 8% (1 sigma) for vibrational temperature measurement through detailed analysis of the influence of the uncertainties of spectroscopic constants and spectral resolution. Radiation structure of the shock layer, including induction, relaxation and equilibrium process, and corresponding rotational and vibrational temperatures are obtained through time gating OES diagnostics with sub-microsecond temporal resolution. The present extensive results will strongly benefit the reaction rate estimation and computational fluid dynamics (CFD) code validation in high enthalpy Mars reentry chemistry. |
| Keyword | Radiation Measurements Shock Wave Mars Re-entry Rotational Temperature Vibrational Temperature Radiation Measurements Cn Entry Tube Mixtures Model |
| Subject Area | 实验流体力学 |
| URL | 查看原文 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000310884300008 |
| Department | LHD高温气流激光诊断 |
| Classification | 二类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/46615 |
| Collection | 高温气体动力学国家重点实验室 |
| Corresponding Author | Yu, XL; Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China. |
| Recommended Citation GB/T 7714 | Lin X,Yu XL,Li F,et al. Measurements of non-equilibrium and equilibrium temperature behind a strong shock wave in simulated martian atmosphere[J]. ACTA MECHANICA SINICA,2012,28,5,:1296-1302. |
| APA | Lin X.,Yu XL.,Li F.,Zhang SH.,Xin JG.,...&Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China..(2012).Measurements of non-equilibrium and equilibrium temperature behind a strong shock wave in simulated martian atmosphere.ACTA MECHANICA SINICA,28(5),1296-1302. |
| MLA | Lin X,et al."Measurements of non-equilibrium and equilibrium temperature behind a strong shock wave in simulated martian atmosphere".ACTA MECHANICA SINICA 28.5(2012):1296-1302. |
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