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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.
Source PublicationACTA MECHANICA SINICA
2012-10-01
Volume28Issue:5Pages:1296-1302
ISSN0567-7718
AbstractNon-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.
KeywordRadiation 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
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Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000310884300008
DepartmentLHD高温气流激光诊断
Classification二类
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46615
Collection高温气体动力学国家重点实验室
Corresponding AuthorYu, 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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