| 载人飞船等离子体鞘电子密度分布的数值计算 |
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| 引用本文： | 曾 明,柳 军,瞿章华. 载人飞船等离子体鞘电子密度分布的数值计算[J]. 国防科技大学学报, 2001, 23(1): 19-22 |
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| 作者姓名： | 曾 明 柳 军 瞿章华 |
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| 作者单位： | 国防科技大学航天与材料工程学院, 湖南 长沙 410073 |
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| 基金项目： | 中科院力学所LHD基金资助项目! (No .2 0 0 0 10 )，湖南省自然科学基金资助项目! (0 0JJY10 0 1) |
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| 摘 要： | 研究高温空气的不同物理模型对载人飞船返回舱等离子体鞘电子密度的影响 ,包括热力平衡的化学非平衡模型与热力、化学都是非平衡的模型的比较 ,以及七组元模型与十一组元模型的比较。采用NND格式和时间预处理技术 ,得到了非平衡流全NS方程的时间渐近解 ,计算了载人飞船等离子体鞘电子密度的典型结果。与飞行试验及有关文献数值计算结果之比较表明 ,本文的计算结果是可信的
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| 关 键 词： | 等离子体鞘 黑障 载人飞船 非平衡流 数值研究 |
| 文章编号： | 1001-2486(2001)01-0019-04 |
| 收稿时间： | 2000-06-27 |
| 修稿时间： | 2000-06-27 |
Numerical Study of Electron Density in the Plasma Sheath over the Capsule |
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| ZENG Ming,LIU Jun and QU Zhanghua. Numerical Study of Electron Density in the Plasma Sheath over the Capsule[J]. Journal of National University of Defense Technology, 2001, 23(1): 19-22 |
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| Authors: | ZENG Ming LIU Jun QU Zhanghua |
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| Affiliation: | College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | The effects of different high temperature air models on electron density in the plasma sheath of the reentry capsule are studied, including the comparison between chemical non-equilibrium model and thermochemical non-equilibrium model, as well as that between 7 species model and 11 species model. The NND scheme and time preconditioning technique is applied to solve the full Navier-Stokes equations of non-equilibrium flow. Typical results of electron denstiy in the plasma sheath are obtained. The numerical results are good compared with the flight measurement and other numerical results. |
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| Keywords: | plasma sheath blackout capsule non-equilibrium flow numerical study |
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