摘要
从化学非平衡NS方程或其简化形式(粘性激波层方程、PNS方程)出发,采用分区求解的方法数值模拟含泰氟隆烧蚀产物的高超声速再入体流场。首先计算分析了RAM-C飞行试验状态和一个考核算例,对计算方法和程序作了初步验证。其次耦合烧蚀壁面边界条件和流体控制方程,采用19组分28个反应的化学反应模型,对有、无烧蚀情况下高超声速钝锥体再入绕流及底部流场进行了数值模拟,深入分析了烧蚀产物对再入流场电子数密度及温度分布的影响。
The flows containing ablative products of TEFLON material over hypersonic vehicles are simulated numerically based on the Navier-Stocks equations with chemical source terms or the simplified form of them （VSL equations and PNS equations）. First, the flows over a reentry bodies for RAM-C flight experiment and another typical condition are computed to validate the computational codes. Then the chemical model of 19 species 28 reactions are used, and the fluid dynamic equations and boundary conditions at ablative wall are coupled to simulate the flow over a hypersonic reentry sphere-cone body for the ablative and non-ablative cases, and the effects of ablation of TEFLON on the electron number densities in the flows are analyzed deeply.
出处
《空气动力学学报》
EI
CSCD
北大核心
2009年第1期57-61,共5页
Acta Aerodynamica Sinica
关键词
再入体
底部流动
电子数密度
烧蚀
泰氟隆
reentry vehicles
base flow
electron number densities
ablation
TEFLON
