| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Analysis of Atomic Electronic Excitation in Nonequilibrium Air Plasmas |
| HE Xin1, DANG Wei-Hua2, JIA Hong-Hui1**, YIN Hong-Wei1, ZHANG Hai-Liang1, CHANG Sheng-Li1, YANG Jun-Cai1 |
1Department of Physics, College of Science, National University of Defense Technology, Changsha 410073
2Changsha Commerce and Tourism College, Changsha 410073
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| Cite this article: |
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HE Xin, DANG Wei-Hua, JIA Hong-Hui et al 2014 Chin. Phys. Lett. 31 095204 |
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Abstract Electronic excitation of atoms is studied in nonequilibrium air plasmas with the electronic temperature between 8000 K and 20000 K. By using the modified Saha–Boltzmann equation, our simplified method takes into account significant radiative processes and strong self-absorption of the vacuum ultraviolet lines. Calculations are carried out at three trajectory points of the Fire II flight experiment. Good agreement with the detailed collisional-radiative model is obtained, and the performance of this method in applications to highly nonequilibrium conditions is better than Park's quasi-steady-state model and Spradian-9.0. A short discussion on the influence of optical thickness of the vacuum ultraviolet radiation is also given. It costs about 2.9 ms on the average to solve one cell of the shock layer on a low cost computer, which shows that the present method is fast and efficient.
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Published: 22 August 2014
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[1] Panesi M et al 2008 VKI Lecture Series RTO-EN-AVT-162
[2] Panesi M et al 2009 J. Thermophys. Heat Transfer 23 236
[3] Bansal A, Modest M F and Levin D A 2011 J. Quant. Spectrosc. Radiat. Transfer 112 1213
[4] Gnoffo P A, Gupta R N and Shinn J L 1989 NASA TP-2867
[5] Park C 1990 Nonequilibrium Hypersonic Aerothermodynamics (New York: Wiley Press) p 1
[6] Candler G V and MacCormack R W 1991 J. Thermophys. Heat Transfer 5 266
[7] Park C 1985 NASA Report 30780
[8] Whiting E E et al 1996 NASA Report 1389
[9] Laux C O 1993 PhD Dissertation (Stanford: Stanford University)
[10] Laux C O 2002 2002–2007 VKI Lecture Series 1 55
[11] Capitelli M, Colonna G and Armenise I 2002 2002–2007 VKI Lecture Series 1 21
[12] Bourdon A and Bultel A 2006 2005–2006 VKI Lecture Series 1 60
[13] Surzhikov S T 2012 J. Heat Transfer 134 03102
[14] Fujita K and Takashi A 1997 Institute of Space and Astronautical Science Report 669
[15] He X et al 2013 Chin. Phys. Lett. 30 114401
[16] Zel'dovich Y B and Raizer Y P 1980 Phys. Shock Waves High-Temp. Hydrodynamic Phenom. (Beijing: Sci. Press) p 1 (in Chinese)
[17] Johnston C O 2006 PhD Dissertation (Virginia: Virginia Polytechnic Institute and State University)
[18] Dong S K, Ma Y and Tan H P 2008 J. Thermophys. Heat Transfer 22 301
[19] Teulet P, Sarrette J P and Gomes A M 2001 J. Quant. Spectrosc. Radiat. Transfer 70 159
[20] Chauveau S M et al 2002 AIAA paper 2002-2229
[21] Panesi M et al 2011 J. Thermophys. Heat Transfer 25 361
[22] Cauchon D L 1967 NASA TM X-1402
[23] Wiese W L, Smith M W and Glennon B M 1966 National Bureau of Standards 4
[24] Huo W M 2008 AIAA paper 2008-1207 |
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