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俯仰阻尼导数分量的CFD数值模拟

席柯 阎超 黄宇 王文 袁武

席柯, 阎超, 黄宇, 等 . 俯仰阻尼导数分量的CFD数值模拟[J]. 北京航空航天大学学报, 2015, 41(2): 222-227. doi: 10.13700/j.bh.1001-5965.2014.0094
引用本文: 席柯, 阎超, 黄宇, 等 . 俯仰阻尼导数分量的CFD数值模拟[J]. 北京航空航天大学学报, 2015, 41(2): 222-227. doi: 10.13700/j.bh.1001-5965.2014.0094
XI Ke, YAN Chao, HUANG Yu, et al. Numerical simulation of individual components of pitch-damping coefficient sum[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(2): 222-227. doi: 10.13700/j.bh.1001-5965.2014.0094(in Chinese)
Citation: XI Ke, YAN Chao, HUANG Yu, et al. Numerical simulation of individual components of pitch-damping coefficient sum[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(2): 222-227. doi: 10.13700/j.bh.1001-5965.2014.0094(in Chinese)

俯仰阻尼导数分量的CFD数值模拟

doi: 10.13700/j.bh.1001-5965.2014.0094
基金项目: 国家973计划资助项目(2009CB724104)
详细信息
    作者简介:

    席柯(1986—), 男, 河南南阳人, 博士生, cauchy86@163.com

    通讯作者:

    阎超(1962—), 男, 江苏邳州人, 教授, yanchao@buaa.edu.cn, 主要研究方向为空气动力学、计算流体力学.

  • 中图分类号: V221+.3

Numerical simulation of individual components of pitch-damping coefficient sum

  • 摘要: 提出一种直接求解直接阻尼导数的方法,该方法不仅适用于轴对称外形,也适用于非轴对称外形.数值模拟飞行器的非定常强迫沉浮运动和强迫角振动,并在Etkin的非定常气动力模型基础上,辨识得到飞行器的洗流时差导数和俯仰阻尼导数,研究飞行器俯仰通道各阻尼导数的数值计算方法.对弹道外形和基本带翼导弹标模外形及Hyflex升力体外形进行研究分析表明,将阻尼导数分量相加得到的俯仰阻尼导数与直接求解强迫角振动得到的俯仰阻尼导数与试验结果吻合很好,各阻尼导数分量随质心位置的变化趋势也与理论预测相符.对于带翼飞行器,超声速条件下,洗流时差导数在俯仰阻尼导数中占主导作用.

     

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出版历程
  • 收稿日期:  2014-03-05
  • 网络出版日期:  2015-02-20

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