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三维有限长圆柱绕流数值模拟

王晓聪 桂洪斌 刘洋

王晓聪, 桂洪斌, 刘洋. 三维有限长圆柱绕流数值模拟[J]. 中国舰船研究, 2018, 13(2): 27-34. doi: 10.3969/j.issn.1673-3185.2018.02.004
引用本文: 王晓聪, 桂洪斌, 刘洋. 三维有限长圆柱绕流数值模拟[J]. 中国舰船研究, 2018, 13(2): 27-34. doi: 10.3969/j.issn.1673-3185.2018.02.004
WANG Xiaocong, GUI Hongbin, LIU Yang. Numerical Simulation of three-dimensional flow around a circular cylinder of finite length[J]. Chinese Journal of Ship Research, 2018, 13(2): 27-34. doi: 10.3969/j.issn.1673-3185.2018.02.004
Citation: WANG Xiaocong, GUI Hongbin, LIU Yang. Numerical Simulation of three-dimensional flow around a circular cylinder of finite length[J]. Chinese Journal of Ship Research, 2018, 13(2): 27-34. doi: 10.3969/j.issn.1673-3185.2018.02.004

三维有限长圆柱绕流数值模拟

doi: 10.3969/j.issn.1673-3185.2018.02.004
详细信息
    作者简介:

    王晓聪, 男, 1993年生, 硕士生。研究方向:三维圆柱绕流及涡激振动。E-mail:wangxcsky@163.com

    通信作者:

    桂洪斌(通信作者), 男, 1967年生, 博士, 教授。研究方向:船舶结构设计, 结构振动与噪声控制。E-mail:guihongbin@sina.com

  • 中图分类号: U664.33

Numerical Simulation of three-dimensional flow around a circular cylinder of finite length

知识共享许可协议
三维有限长圆柱绕流数值模拟王晓聪,等创作,采用知识共享署名4.0国际许可协议进行许可。
  • 摘要:   目的  为探究有限长圆柱绕流的流动机理和特性,  方法  采用大涡模拟(LES)数值模型并结合涡识别方法,对三维有限长圆柱绕流进行数值模拟,并对有限长圆柱绕流进行验证和分析。  结果  模拟结果表明,有限长圆柱回流区相对较短,自由端的下洗作用会扰乱卡门涡街,导致阻力系数损失;相对于固定壁面,自由端面对顺流向速度影响更大;自由端面"蘑菇"涡成对出现,且存在2个流动源点;有限长圆柱流场存在更明显的三维特性,阻力系数更小;圆柱自由端后存在梢涡,圆柱与固定壁面交界处存在"马蹄"涡。  结论  所得结果可对有限长圆柱的流动特性进行相对全面的描述,对于理解和研究有限长圆柱绕流机理具有一定的参考价值。
  • 图  1  有限长圆柱绕流流动模型[6]

    Figure  1.  Flow model of FC[6]

    图  2  有限和无限长圆柱的计算域模型

    Figure  2.  Model of computational domain for FC and IFC

    图  3  有限和无限长圆柱计算域网格划分

    Figure  3.  Grid division of computational domain for FC and IFC

    图  4  有限长和无限长圆柱顺流向速度ux及压力系数Cp分布

    Figure  4.  Distribution of streamwise velocity ux and pressure coefficient Cp for FC and IFC

    图  5  有限长和无限长圆柱的升力系数、阻力系数时域分布

    Figure  5.  Distribution of the time-dependent lift and drag coefficient for FC and IFC

    图  6  圆周压力系数分布

    Figure  6.  Distribution of pressure coefficient around circumference

    图  7  有限和无限长圆柱顺流向速度ux沿z方向的分布

    Figure  7.  Distribution of streamwise velocity ux around z axis for FC and

    图  8  有限长圆柱Q准则涡量等值线分布

    Figure  8.  Distribution of iso-contours for vorticity of FC according to Q-criterion

    图  9  有限长圆柱顺流向速度云图

    Figure  9.  Contours of streamwise velocity for FC

    图  10  圆柱壁面流线图

    Figure  10.  Diagram of cylinder's surface streamline

    图  11  Q准则涡量等值面图(Q=6)

    Figure  11.  Vortical structures revealed by isosurface of the Q-criterion(Q=6)

    表  1  数值计算结果与文献实验结果的对比

    Table  1.   Comparison of numerical simulation and experimental results provided by the literatures

    算例 网格数 Re AR ${{\bar C}_{\rm{d}}} $ Clrms St SGS
    IFC0 509 800 3.9×103 - 1.078 0.124 0.21 SM
    IFC1 619 500 3.9×103 - 1.026 0.116 0.21 SM
    IFC2 619 500 3.9×103 - 1.141 0.126 0.22 DSM
    IFC3 800 000 3.9×103 - 1.028 0.116 0.21 SM
    Sim1 - 3.9×103 - 0.99 0.11 0.21 -
    FC0 1 000 000 3.9×103 π 0.746 0.063 0.16 SM
    FC1 1 822 972 3.9×103 π 0.784 0.053 0.11 SM
    FC2 1 822 972 3.9×103 π 0.832 0.058 0.11 DSM
    FC3 2 400 000 3.9×103 π 0.782 0.050 0.11 SM
    EXP1 - 3.2×104 2 0.78 - - -
    EXP2 - 4.7×104 2 0.73 - 0.122 -
    EXP3 - 2.9×103 π 0.77 - - -
    下载: 导出CSV
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    WANG L, LI T Y, ZHU X, et al. Improved immersed boundary lattice Boltzmann method and simulation of flow over rotating cylinder[J]. Chinese Journal of Ship Research, 2016, 11(6):97-103(in Chinese). http://118.145.16.233/Jweb_zgjcyj/CN/abstract/abstract1627.shtml
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出版历程
  • 收稿日期:  2017-09-11
  • 网络出版日期:  2018-04-11
  • 刊出日期:  2018-04-01

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