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低温风洞排气塔流致振动的理论及数值研究

张伟 高鑫鑫 高荣 张小斌 程俊

张伟, 高鑫鑫, 高荣, 等. 低温风洞排气塔流致振动的理论及数值研究[J]. 航空动力学报, 2024, 39(7):20220422 doi: 10.13224/j.cnki.jasp.20220422
引用本文: 张伟, 高鑫鑫, 高荣, 等. 低温风洞排气塔流致振动的理论及数值研究[J]. 航空动力学报, 2024, 39(7):20220422 doi: 10.13224/j.cnki.jasp.20220422
ZHANG Wei, GAO Xinxin, GAO Rong, et al. Theoretical and numerical study on flow-induced vibration of exhaust tower in a cryogenic wind tunnel[J]. Journal of Aerospace Power, 2024, 39(7):20220422 doi: 10.13224/j.cnki.jasp.20220422
Citation: ZHANG Wei, GAO Xinxin, GAO Rong, et al. Theoretical and numerical study on flow-induced vibration of exhaust tower in a cryogenic wind tunnel[J]. Journal of Aerospace Power, 2024, 39(7):20220422 doi: 10.13224/j.cnki.jasp.20220422

低温风洞排气塔流致振动的理论及数值研究

doi: 10.13224/j.cnki.jasp.20220422
基金项目: 中国空气动力研究与发展中心基础和前沿技术研究基金探索项目(PJD20200240)
详细信息
    作者简介:

    张伟(1988-),男,工程师,硕士,主要从事低温两相流及流固耦合研究

    通讯作者:

    程俊(1984-),男,工程师,硕士,主要从事低温系统设计。E-mail:chengjun@cardc.cn

  • 中图分类号: V211

Theoretical and numerical study on flow-induced vibration of exhaust tower in a cryogenic wind tunnel

  • 摘要:

    为分析排气塔在自然风载和内流共同作用下的结构安全性,采用理论和数值模拟方法分析了排气塔的流致振动响应情况。理论分析获得了排气塔在自然风载作用下的顺流响应和均值响应。采用计算流体力学方法,shear stress transport (SST)k-ω湍流模型和动网格数值技术实现了排气塔的双向流固耦合数值模拟,获得了排气塔在内外流动混合作用下的速度、压力和涡量分布。表明排气塔在特定风载下的旋涡脱落频率接近1阶模态频率,塔体应力较小,在许用应力范围内。

     

  • 图 1  排气塔三维模型(单位:m)

    Figure 1.  3D model of exhaust tower (unit:m)

    图 2  几何模型和流场布置

    Figure 2.  Geometry model and flow field distribution

    图 3  圆柱绕流区域网格分布

    Figure 3.  Mesh distribution at zone around cylinder

    图 4  t=4.42 s时x=0平面速度分布

    Figure 4.  Velocity distribution at plane x=0 at t=4.42 s

    图 5  t=4.42 s时z=31 m平面涡量分布

    Figure 5.  Vorticity distribution at plane z=31 m at t=4.42 s

    图 6  t=4.42 s时z=31 m平面流线分布

    Figure 6.  Streamline distribution at plane z=31 m at t=4.42 s

    图 7  外流场中的涡结构(λ2等值面)

    Figure 7.  Vortex structure in outside fluid zone (isosurface of λ2

    图 8  涡结构局部特征(λ2等值面)

    Figure 8.  Local feature of vortex structure (isosurface of λ2

    图 9  不同高度的速度变化

    Figure 9.  Velocity variation at different altitudes

    图 10  模拟与试验值的St对比

    Figure 10.  St comparison between simulation and experiment

    图 11  排气塔顶部变形随时间变化

    Figure 11.  Variation of displacement of venting tower with time

    图 12  排气塔顶部沿x方向变形随时间变化

    Figure 12.  Variation of displacement at x direction of venting tower with time

    图 13  排气塔顶部沿y方向变形随时间变化

    Figure 13.  Variation of displacement at y direction of venting tower with time

    图 14  沿y方向变形(未排气)

    Figure 14.  Displacement at y direction (without venting)

    图 15  变形运动轨迹

    Figure 15.  Deformation trajectory

    图 16  等效应力随时间变化

    Figure 16.  Variation of equivalent stress with time

    图 17  排气塔局部应力分布

    Figure 17.  Local stress distribution of venting tower

    表  1  排气塔振动模态频率

    Table  1.   Vibration modal frequency of exhaust tower Hz

    模态 频率 模态 频率
    1 1.9587 4 12.027
    2 1.9684 5 15.270
    3 11.999 6 16.057
    下载: 导出CSV
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  • 收稿日期:  2022-06-13
  • 网络出版日期:  2023-12-26

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