中国空间科学技术

中国空间科学技术

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返回式卫星烧蚀热防护机理与数值模拟

姜贵庆;   

  1. 北京空气动力研究所,
  • 发布日期:1990-12-25

ABLATIVE THERMAL PROTECTIVE MECHANISM AND NUMERICAL SIMULATION FOR RETURNABLE SATELLITE

Jiang Guiqing (Beijing Institute of Aerodynamics)   

  • Online:1990-12-25

被引次数

6

摘要： 详细讨论了低温炭化材料的质量损失和吸热机理。利用分层模型,给出具有不同物理和化学特性的各层的能量守恒关系。用积分法给出各层热防护的数值模拟,数值模拟计算结果与一维热传导解析解结果一致,亦与地面烧蚀实验結果一致。

关键词: 烧蚀材料, 微积分学, 再入飞行器, 计算

Abstract: This paper discusses in detail the problem on the mass loss and endothermic mechanism for charring material.By using a lamination model, the energy conservative relations for each lager which has different chemical and physical property of material are presented.The numerical simulation of thermal protection for each lager is established by integral method.Comparison with analytic results of one-dimensional heat conduction shows a good agreement.The calculation results also consist tent with that of ablation experiments.

Key words: Ablative material, Infinitesimal calculus, Reentry Vehicle, Computation