| 附加附属管的隔水管涡激振动离散涡模拟 |
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| 引用本文： | 田启龙,黄熙龙,王嘉松.附加附属管的隔水管涡激振动离散涡模拟[J].水动力学研究与进展(A辑),2016(5):633-640. |
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| 作者姓名： | 田启龙 黄熙龙 王嘉松 |
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| 作者单位： | 1. 上海交通大学船舶海洋与建筑工程学院,上海,200240;2. 中国工程热物理研究院流体物理所,绵阳,629100 |
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| 基金项目： | 国家自然科学基金(11372188)，国家重点基础研究发展计划(2015CB251203)Supported by the National Natural Science Foundation of China(11372188)，the National Basic Research Program of China(2015CB251203) |
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| 摘 要： | 该文采用离散涡数值方法,对附加附属管的隔水管涡激振动问题进行了模拟。计算了配置4–10根附属管情况下隔水管涡激振动问题,将附加附属管后隔水管的受力系数、振幅与裸管的结果进行比较,同时也研究了不同来流攻角对附属管涡激振动的影响。结果表明,附加附属管后隔水管振幅与裸管相比,受力系数与振幅均有不同程度地减小,对隔水管涡激振动的抑制效果明显。不同数量的附属管对来流攻角的敏感性也各不相同,附加6、8和10根附属管都有很好的抑制效果,其中附加10根附属管对隔水管的抑制效果最好,减幅约达到50%,且对来流攻角的敏感性也最低。
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| 关 键 词： | 圆柱绕流 离散涡 涡激振动 附属管 |
Vortex-induced vibration of the riser with affiliated pipes based on discrete vortex method |
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| Abstract: | In present paper,the ⅤⅣ of the riser with affiliated pipes is simulated by DVM(discrete vortex method).The load coefficients and amplitude of the riser with affiliated pipes are compared with those of the bare one.In practical projects,the inflow direction varies.Consequently,it is essential to research the influence of inflow angles towards the suppression effect.It turns out that both the load coefficients and amplitude of the riser with affiliated pipes are decreased by different degrees,and the sensitivity to the inflow directions varies.The riser with 6,8 and 10 affiliated pipes are tested have good suppression effect.The riser with ten affiliated pipes has been verified that it can decrease the amplitude about 50 percent and less sensitive to the inflow directions. |
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| Keywords: | flow around a cylinder discrete vortex vortex-induced vibration affiliated pipes |
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