附加附属管的隔水管涡激振动离散涡模拟

发布时间：2018-07-03 21:48

本文选题：圆柱绕流 + 离散涡　；参考：《水动力学研究与进展(A辑)》2016年05期

【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。
[Abstract]:In this paper, a discrete vortex numerical method is used to simulate the vortex-induced vibration of a riser with attached tubes. In this paper, the vortex-induced vibration of the riser under the condition of 4 or 10 attached tubes is calculated. The stress coefficient and amplitude of the riser are compared with the results of the bare tube. At the same time, the influence of different attack angles on the vortex-induced vibration of the attached tube is also studied. The results show that the stress coefficient and amplitude of the riser are decreased in varying degrees compared with the bare tube, and the effect on the vortex induced vibration of the riser is obvious. The sensitivity of different numbers of adnexal tubes to the angle of attack was also different. The addition of 6 or 10 additional tubes had good inhibitory effect on the riser, and the addition of 10 additional tubes had the best inhibitory effect on the riser. The reduction is about 50 and the sensitivity to the angle of attack is the lowest.
【作者单位】：上海交通大学船舶海洋与建筑工程学院;中国工程热物理研究院流体物理所;
【基金】：国家自然科学基金(11372188) 国家重点基础研究发展计划(2015CB251203)~~
【分类号】：P756.2

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