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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。
In this paper, the vortex-induced vibration of riser risers attached to an attached pipe is simulated by discrete eddy numerical method. The vortex-induced vibration of riser riser with 4-10 auxiliary tubes was calculated. The stress coefficient and amplitude of additional riser riser were compared with bare tubes. The effects of different angles of attack on the appendages Effect of tube vortex induced vibration. The results show that compared with naked pipe, the stress amplitude and the amplitude of the riser after the additional pipe are reduced to some extent, and the effect of vortex-induced vibration on the riser is obviously restrained. Different numbers of attached tubes have different sensitivity to the flow angle of attack, and additional 6, 8 and 10 attached tubes have good inhibitory effect. Among them, 10 attached tubes have the best inhibitory effect on the riser, A reduction of about 50%, and the lowest sensitivity to the angle of attack.