摘要
高超声速化学非平衡尾流的分析与计算是空气动力学中的一个重要课题。本文采用二阶精度的中心差隐格式，求解了抛物化的Ｎ－Ｓ方程，得到了高空２０ＫＭ及６０ＫＭ非平衡尾流的数值解，研究了碱金属引射对尾流电子密度的影响。计算结果表明引射碱金属对尾流电子密度影响明显，尾流电子密度因此增加了１～３个量级。文中化学反应模型采用十组元模型，组元包括Ｏ２、Ｎ２、Ｏ、Ｎ、ＮＯ、ＮＯ＋、Ｏ－２、Ｎａ、Ｎ＋ａ以及ｅ－。
The analysis and computation of chemical nonequilibrium hypersonic wakes are important tasks of aerodynamics. Using secret scheme with two order accuracy, it has sloved the parabolic N-S equations and obtained numerical solutions of hypersonic wakes at 20km and 60km. It has studied the effect to wakes'electron number desity through Jetting Alkaline. From the results, it show that the effect of Alkaline on electron number density in wakes is evident. A ten-specie model is used as chemical reaction model, including O 2、N 2、N、O、NO、NO +、O - 2、N + a、Na and e -.
出处
《宇航学报》
EI
CSCD
北大核心
1996年第4期100-103,共4页
Journal of Astronautics
关键词
高超声速流动
尾迹
碱金属
化学动力学
Alkaline hypersonic Wakes Electron number density Chemical dynamics
