| 高超声速弹头俯仰动态特性数值研究 |
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| 引用本文： | 贺国宏,杨小亮,赵海洋,刘伟.高超声速弹头俯仰动态特性数值研究[J].兵工学报,2009,30(7):862-866. |
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| 作者姓名： | 贺国宏 杨小亮 赵海洋 刘伟 |
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| 作者单位： | 1．第二炮兵装备研究院，北京100085;2．国防科技大学航天与材料工程学院，湖南长沙410073 |
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| 摘 要： | 在Etkin的非定常气动力模型基础上，采用非定常Navier-Stokes方程描述高超声速导弹标模外形(HBS)的非定常强迫振动流场，引入采用Power限制器的空间三阶精度PWNND格式进行数值离散，研究HBS在不同攻角下的俯仰阻尼特性，并与实验及牛顿理论结果进行了对比；同时还研究了包括振动减缩频率、振动振幅及底部流动等因素对HBS俯仰阻尼特性的影响。
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| 关 键 词： | 流体力学 Navier-Stokes方程 非定常流动 数值模拟 俯仰阻尼导数 |
Numerical Study of Pitching Dynamic Characteristic for Hypersonic Missile |
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| HE Guo-hong,YANG Xiao-liang,ZHAO Hai-yang,LIU Wei.Numerical Study of Pitching Dynamic Characteristic for Hypersonic Missile[J].Acta Armamentarii,2009,30(7):862-866. |
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| Authors: | HE Guo-hong YANG Xiao-liang ZHAO Hai-yang LIU Wei |
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| Affiliation: | 1. The Second Artillery Equipment Research Institute, Beijing 100083, China;
2. College of Aerospace and Material Technology, National University of Defense Technology, Changsha 410073，Hunan,China |
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| Abstract: | The damping-in-pitch characteristic of hyperballistic shape(HBS) at different angles of attack was investigated and compared with the results of test and Newtonian method,the influence of reduced frequency,amplitude and base flow on the damping-in-pitch characteristic of HBS were also studied by the unsteady Navier-Stokes equations,which are solved with the third-order-in-space PWNND scheme constructed with power-limiter and used for describing the unsteady forced oscillating flow field over HBS,under the b... |
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| Keywords: | fluid mechanics Navier-Stokes equation unsteady flow numerical simulation damping-in-pitch derivatives |
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