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LEO原子氧对空间材料侵蚀的数值模拟

王衡禹 李椿萱

王衡禹, 李椿萱. LEO原子氧对空间材料侵蚀的数值模拟[J]. 北京航空航天大学学报, 2005, 31(03): 293-297.
引用本文: 王衡禹, 李椿萱. LEO原子氧对空间材料侵蚀的数值模拟[J]. 北京航空航天大学学报, 2005, 31(03): 293-297.
Wang Hengyu, Lee Chunhian. Development of a reaction-diffusion model for erosion and identification of the associated diffusion coefficient[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(03): 293-297. (in Chinese)
Citation: Wang Hengyu, Lee Chunhian. Development of a reaction-diffusion model for erosion and identification of the associated diffusion coefficient[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(03): 293-297. (in Chinese)

LEO原子氧对空间材料侵蚀的数值模拟

详细信息
    作者简介:

    王衡禹(1979-),男,四川成都人,硕士生,cfd-why@sohu.com.

  • 中图分类号: V 21125

Development of a reaction-diffusion model for erosion and identification of the associated diffusion coefficient

  • 摘要: 提出了吸附作用(包括物理吸附和化学吸附)是引起空间材料原子氧腐蚀的主要机理.以此为依据,建立了相应的腐蚀量的反应-扩散方程.应用分子动力学经典碰撞理论的估算表明了方程中的物理作用项对于扩散效应为一小量,从而进一步简化了方程.在所建立的模型方程中,选用了基于Eyring绝对速率理论的扩散系数.对空间表面材料Kapton在近地轨道LEO(Low Earth Orbit)环境受原子氧侵蚀的过程进行了数值模拟,计算结果与飞行试验数据在误差允许的范围内符合得较好.

     

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出版历程
  • 收稿日期:  2003-08-26
  • 网络出版日期:  2005-03-31

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