引用本文: | 陈伟芳,石于中,吴其芬.化学非平衡尾迹流场的数值计算[J].国防科技大学学报,1994,16(2):72-76.[点击复制] |
Chen Weifang,Shi Yuzhong,Wu Qifen.Numerical Computation of Chemical Non-equilibrium Wakes[J].Journal of National University of Defense Technology,1994,16(2):72-76[点击复制] |
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化学非平衡尾迹流场的数值计算 |
陈伟芳, 石于中, 吴其芬 |
(国防科技大学 航天技术系 湖南 长沙 410073)
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摘要: |
高超音速化学非平衡尾迹流场的分析及计算是再入空气动力学的一个重要课题。本文采用轴线极限方程,成功地消除了控制方程在轴线上的奇性;采用二阶精度的中心差隐格式,求解了抛物化的N-S方程,得到了20km及60km再入时尾迹流场的数值解。计算结果表明,在远尾迹场,对电子数密度的主要影响是O2的吸附反应。 |
关键词: 高超音速 化学非平衡 尾迹 数值模拟 |
DOI: |
投稿日期:1993-09-06 |
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Numerical Computation of Chemical Non-equilibrium Wakes |
Chen Weifang, Shi Yuzhong, Wu Qifen |
(The Department of Aerospace Technology, NUDT,Changsha,410073)
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Abstract: |
The analysis and computation of chemical non-equilibrium hypersonic wakes are important tasks of reentry aerodynamics. This paper,using axial equations, successfully climinates the axial sigularity in governing equations. Using central differences secret scheme with two rand accuracy,it has solved the parabolic N-S equations and obtained numerical solutions of wakes at 20km and 60km,The results show that the effect of oxygen-electron attachment processes on electron density in far wakes is important. |
Keywords: hypersonic chemical non-equilibrium wakes numerical emulation |
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