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首页> 外文期刊>Journal of offshore mechanics and arctic engineering >Study on Multimode Vortex-Induced Vibration of Deepwater Riser in Different Flow Fields by Finite Element Simulations
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Study on Multimode Vortex-Induced Vibration of Deepwater Riser in Different Flow Fields by Finite Element Simulations

机译：有限元模拟研究深水立管在不同流场中的多模涡激振动

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摘要

Multimode vortex-induced vibration (VIV) of slender risers, respectively, in stepped and shear flows is explored by finite element simulations. Taking account of the interaction-between fluid and structure, a hydrodynamic model is proposed and embedded into the finite element simulation so as to carry out dynamic response of multimode VIV in time-domain. Multimode VIV in both stepped and shear flow fields is examined. In the case of stepped flow, a semi-empirical formula of modal weight is given. In the case of shear flow, modal excitation region can be determined based on modal energy, and participating modes approximately distribute in scattering groups.
机译：通过有限元模拟研究了细长立管的多模涡激振动（VIV），分别在阶梯流和剪切流中。考虑到流体与结构之间的相互作用，提出了一种流体动力学模型并将其嵌入到有限元模拟中，以便在时域内进行多模VIV的动力响应。在阶梯流场和剪切流场中都检查了多模VIV。在分步流动的情况下，给出了模态权重的半经验公式。在剪切流的情况下，可以基于模态能量确定模态激发区域，并且参与模态大致分布在散射组中。

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  • 来源
    《Journal of offshore mechanics and arctic engineering》 |2016年第1期|011801.1-011801.8|共8页
  • 作者

    Weimin Chen; Min Li; Liwu Zhang; Tiancai Tan;

  • 作者单位

    Key Laboratory of Mechanics in Fluid Solid Coupling System, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;

    School of Aeronautics Sciences and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

    Key Laboratory of Mechanics in Fluid Solid Coupling System, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;

    School of Aeronautics Sciences and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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