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Surface ablation significantly affects the distribution of plasma in high-speed flow and the characteristics of their interaction with electromagnetic fields. Considering the mechanism of ablation and ejection on the surface of hypersonic vehicle, the participation of ablation products in the plasma generation process in the flow field, the conduction mechanism of mixed ionized gas containing alkali metal and the electromagnetic dynamics mechanism, the coupled calculation method of high-speed flow/plasma/electromagnetic field with alkali metal ablation is established by solving the three-dimensional thermochemical non-equilibrium flow governing equation with electromagnetic source term, the electric field Poisson equation and the magnetic vector Poisson equation. Combined with the common ablation and pyrolysis process of carbon-carbon materials and silicon-based phenolic resin materials, the mechanism and law of the interaction between surface ablation and electromagnetic field on the hypersonic plasma sheath under various conditions are systematically studied. The results show that the ablation effect affects the plasma distribution in the flow field, which is affected by the ablation mass ejection rate and the mass proportion of alkali metal. When the alkali metal content is high, the alkali metal ionization reaction is dominant, and the electron number density can increase by 1 ~ 2 orders of magnitude. The influence of different materials on plasma is different. The mass ejector ratio of silicon-based phenolic resin is larger, and the molar concentration of CO+ and C+ produced by ionization is close to that of NO+ and O2+, which can not be ignored. Alkali metals in ablative materials can significantly improve the control effect of magnetohydrodynamics. With the increase of the proportion of alkali metals, the coupling effect of electromagnetic fields increases, and the relationship between them is nonlinear. When the speed is low, the ionization degree of air itself is low and the coupling effect of electromagnetic field is weak. But the efficiency of "improving the electromagnetic effect by ablation of alkali metal" is higher.
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Keywords:
- Electromagnetic flow coupling /
- Ablation /
- Alkali metal /
- Plasma /
- Hypersonic flow
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[1] Tian Z Y 2008 Ph. D. Dissertation (Changsha: National University of Defense Technology) (in Chinese)[田正雨 2008 博士学位论文(长沙: 国防科学技术大学)]
[2] Ding M S, Jiang T, Liu Q Z, Dong W Z,Gao T S 2019 Acta Aeronaut. Astronaut. Sin. 40 123009 (in Chinese) [丁明松,江涛,刘庆宗,董维中,高铁锁 2019 航空学报 40 123009]
[3] Dang W W, Li X S 2020 Coat. Prot. 41 33 (in Chinese) [党文伟,李晓升 2020 涂层与防护 41 33]
[4] Chai D, Fang Y W,Tong Z X,Gao X. 2013 J. Aerosp.Power 28 1962(in Chinese) [柴栋,方洋旺,童中翔,高翔 2013 航空动力学报 28 1962]
[5] Otsu H, Matsuda A, Abe T, Konigorski D 2006 AIAA 2006-3236
[6] Boettcher C 2009 AIAA 2009-7254
[7] Fujino T, Ishikawa M 2013 AIAA 2013-3000
[8] Fujino T, Takahashi T 2016 AIAA 2016-3227
[9] Masuda K, Shimosawa Y, Fujino T 2015 AIAA 2015-3366
[10] Robin A M, Adam S P, Partho P 2019 J. Thermophysics Heat TR 33 1018
[11] Daniel R S, David E G, Peter A J, Cullen T G, James C M 2020 AIAA Journal 58 4495
[12] Bisek N J, Poggie J 2011 AIAA 2011-897
[13] Zeng X J, Li H Y 2017 J. Astronaut. 38 109 (in Chinese)[曾学军,李海燕 2017宇航学报 38 109]
[14] Li K 2017 Ph. D. Dissertation (Changsha: National University of Defense Technology) (in Chinese)[李开 2017 博士学位论文(长沙: 国防科学技术大学)]
[15] Park C, Howe J T, Jaffe R L 1994 J. Thermophysics Heat TR 8 9
[16] Le J L 2005 Reentry physics (Beijing: National Defence Industry Press) (in Chinese) [乐嘉陵 2005 再入物理[M]. 北京: 国防工业出版社, 2005.
[17] Ding M S, Jiang T, Dong W Z,Gao T S,Liu Q Z 2017 Acta Aeronaut. Astronaut. Sin. 38 121030. (in Chinese) [丁明松, 江涛, 董维中,高铁锁,刘庆宗 2017 航空学报 38 121030]
[18] Macheret S O, Shneider M N 2004 AIAA 2004-1024
[19] Li K, Liu J, Liu W Q 2017 Acta Phys. Sin. 66 054701(in Chinese)[李开, 柳军, 刘伟强2017 物理学报 66 054701]
[20] Ding M S, Jiang T, Dong W Z, Gao T S, Liu Q Z 2019 Acta Phys. Sin. 68 174702 (in Chinese) [丁明松, 江涛, 董维中, 高铁锁, 刘庆宗2019 物理学报 68 174702]
[21] Ding M S, Liu Q Z, Jiang T, Dong W Z, Gao T S 2020 Acta Aeronaut. Astronaut. Sin. 41 123278 (in Chinese) [丁明松, 刘庆宗, 江涛, 董维中, 高铁锁 2020 航空学报 41 123278]
[22] Ding M S, Jiang T, Liu Q Z, Dong W Z, Gao T S, Fu Y A X 2020 Acta Phys. Sin. 69 134702 (in Chinese)[ 丁明松, 江涛, 刘庆宗, 董维中, 高铁锁, 傅杨奥骁 2020 物理学报 69 134702]
[23] Ding M S, Liu Q Z, Jiang T, Dong W Z, Gao T S, Fu Y A X 2020 Acta Aeronaut. Astronaut. Sin. 42 124501(in Chinese)[丁明松, 刘庆宗, 江涛, 董维中, 高铁锁, 傅杨奥骁 2020 航空学报 42 124501]
[24] Keenan J A, Candler G V 1993 AIAA 93-2789
[25] Dong W Z, Gao T S 2010 Acta Aerodyn. Sin. 28 708 (in Chinese)[董维中, 高铁锁2010 空气动力学学报 28 708]
[26] Fujino T, Ishikawa M 2006 IEEE T. Plasma Sci. 34 409
[27] Dunn M G, Kang S W 1973 NASA CR-2232
[28] Candler G V, Maccormack R W 1988 AIAA 1988-511
[29] Li K, Liu W Q 2016 Acta Phys. Sin. 65 064701 (in Chinese)[李开, 刘伟强 2016 物理学报 65 064701]
[30] Yao X, Liu W Q, Tan J G 2018 Acta Phys. Sin. 67 174702 (in Chinese)[姚霄, 刘伟强, 谭建国 2018 物理学报 67 174702]
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