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吸气式高超声速飞行器耦合运动数值模拟

丛戎飞 叶友达 赵忠良

丛戎飞, 叶友达, 赵忠良等 . 吸气式高超声速飞行器耦合运动数值模拟[J]. 北京航空航天大学学报, 2021, 47(9): 1780-1789. doi: 10.13700/j.bh.1001-5965.2020.0313
引用本文: 丛戎飞, 叶友达, 赵忠良等 . 吸气式高超声速飞行器耦合运动数值模拟[J]. 北京航空航天大学学报, 2021, 47(9): 1780-1789. doi: 10.13700/j.bh.1001-5965.2020.0313
CONG Rongfei, YE Youda, ZHAO Zhonglianget al. Numerical simulation of coupling motion of an air-breathing hypersonic vehicle[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(9): 1780-1789. doi: 10.13700/j.bh.1001-5965.2020.0313(in Chinese)
Citation: CONG Rongfei, YE Youda, ZHAO Zhonglianget al. Numerical simulation of coupling motion of an air-breathing hypersonic vehicle[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(9): 1780-1789. doi: 10.13700/j.bh.1001-5965.2020.0313(in Chinese)

吸气式高超声速飞行器耦合运动数值模拟

doi: 10.13700/j.bh.1001-5965.2020.0313
详细信息
    通讯作者:

    叶友达, E-mail: youdaye@sina.com

  • 中图分类号: V212.1;V221.1+5;V221.3

Numerical simulation of coupling motion of an air-breathing hypersonic vehicle

More Information
  • 摘要:

    为了研究吸气式高超声速飞行器在俯仰/滚转两自由度耦合运动下的动稳定性问题,基于气动/运动耦合数值模拟方法并结合理论分析,针对一种类似SR-72构型的吸气式高超声速飞行器开展了进气道通流状态下强迫俯仰/自由滚转耦合运动数值模拟研究。结果表明:强迫俯仰/自由滚转耦合运动下,滚转通道的动力学方程可以简化为有阻尼的Mathieu方程形式,并且可以求得稳定性边界。理论分析表明:滚转通道的动稳定性与俯仰振荡角频率相关,在飞行器滚转振荡固有角频率附近存在2个临界角频率,当俯仰振荡角频率位于2个临界角频率之间时,滚转通道是动不稳定的。在俯仰振荡振幅较小时,数值模拟结果与理论符合较好,但实际的临界角频率与理论分析求解的值有一定偏差;数值模拟结果表明随着俯仰振荡振幅增大,导致滚转发散的角频率范围变得更宽,且向更高频率偏移。

     

  • 图 1  模型几何外形及计算网格

    Figure 1.  Geometric configuration and computational grid of model

    图 2  模型内流道

    Figure 2.  Internal flow path of model

    图 3  钝锥外形及网格拓扑

    Figure 3.  Blunt cone model configuration and topology of computational grid

    图 4  气流角位移曲线

    Figure 4.  Airflow angle displacement curves

    图 5  滚转力矩系数随滚转角变化曲线

    Figure 5.  Variation of rolling moment coefficients with rolling angles

    图 6  滚转静导数随俯仰角变化曲线

    Figure 6.  Variation of rolling static derivatives with pitch angles

    图 7  θ=±10°,γ=40°时上下翼面压力云图及物面流线

    Figure 7.  θ=±10°, γ=40° upper and lower wing surface pressure contours and streamlines

    图 8  滚转动导数随俯仰角变化曲线

    Figure 8.  Variation of rolling dynamic derivatives with pitch angles

    图 9  坐标系定义

    Figure 9.  Reference frame definition

    图 10  ω-λ平面图

    Figure 10.  ω-λ plane graph

    图 11  不同俯仰振荡频率下俯仰角和滚转角随时间的变化(A=5°)

    Figure 11.  Time history of pitch angles and rolling angles at different pitch oscillation frequencies(A=5°)

    图 12  不同俯仰振荡频率下俯仰角和滚转角随时间的变化(A=10°)

    Figure 12.  Time history of pitch angles and rolling angles at different pitch oscillation frequencies(A=10°)

    图 13  不同俯仰振荡频率下的滚转相图

    Figure 13.  Phase diagram of rolling angular velocity to rolling angle at different pitch oscillation frequencies

    图 14  稳定性平面图

    Figure 14.  Stability plane graph

    表  1  数值模拟工况(A=5°)

    Table  1.   Numerical simulation conditions(A=5°)

    编号 f/Hz ω/(rad·s-1) θ0/(°)
    1 0.1 0.628 32 5
    2 0.135 0.848 23 5
    3 0.15 0.942 48 5
    4 0.2 1.256 64 5
    下载: 导出CSV

    表  2  数值模拟工况(A=10°)

    Table  2.   Numerical simulation conditions (A=10°)

    编号 f/Hz ω/(rad·s-1) θ0/(°)
    1 0.1 0.628 32 5
    2 0.15 0.942 48 5
    3 0.175 1.099 56 5
    4 0.2 1.256 64 5
    5 0.25 1.570 8 5
    下载: 导出CSV
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  • 收稿日期:  2020-07-03
  • 录用日期:  2020-09-09
  • 网络出版日期:  2021-09-20

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