| 烧蚀对再入体绕流电子数密度影响的数值研究 |
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| 引用本文： | 何开锋,高铁锁,江涛. 烧蚀对再入体绕流电子数密度影响的数值研究[J]. 空气动力学学报, 2009, 27(1) |
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| 作者姓名： | 何开锋 高铁锁 江涛 |
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| 作者单位： | 西北工业大学航空学院,陕西,西安,710072;中国空气动力研究与发展中心,四川,绵阳,621000 |
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| 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.
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| 关 键 词： | 再入体 底部流动 电子数密度 烧蚀 泰氟隆 |
Numerical study for the effects of ablation on electron number densities of flow over reentry vehicles |
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| HE Kai-feng,GAO Tie-suo,JIANG Tao. Numerical study for the effects of ablation on electron number densities of flow over reentry vehicles[J]. Acta Aerodynamica Sinica, 2009, 27(1) |
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| Authors: | HE Kai-feng GAO Tie-suo JIANG Tao |
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| Affiliation: | 1.Northwestern Polytechnical University;Xi'an 710072;China;2.China Aerodynamics Research and Development Center;Mianyang 621000;China |
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| Abstract: | 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 wa... |
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| Keywords: | reentry vehicles base flow electron number densities ablation TEFLON |
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