水下软管系统运动响应实验研究
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上海交通大学

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Experimental study on motion response of submarine hoses system
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Shanghai Jiao Tong University

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    摘要:

    为了对海上粘接式输油软管设计进行适用性研究,从而掌握CALM单点Lazy-wave和Steep-wave构型的水下软管系统适用的水深和环境条件,故在海洋工程水池中分别对两种构型的软管进行了运动响应实验研究。实验中模拟了静水与规则波环境条件,并对软管顶端进行强迫振荡,观察Lazy-wave和Steep-wave两种构型的水下软管系统的运动响应。实验结果表明,对于静水海况和规则波海况,两种构型的软管在顶端运动为周期运动时,各方向的动态应变呈周期性变化且皆有高频成分;规则波海况下二阶模态的振动幅值相比于静水的均有所增加;此外,Steep-wave构型比Lazy-wave构型更容易激发高阶模态。

    Abstract:

    In order to study the applicability of offshore bonded hoses and obtain the applicable water depth and environmental conditions for Lazy-wave and Step-wave submarine hose system, the experiments on motion response of both were carried out in the ocean engineering tank. In the experiment, still water and regular wave environmental conditions were simulated to observe the motion response of the submarine hose system with two configurations of Lazy-wave and Steep-wave. The results show that the dynamic strain in each direction changes periodically and has high frequency components when the top motion of the two configurations is periodic for the cases of still water and regular wave; The amplitude of the second-order mode is increased in the regular wave case compared with that of still water case. In addition, Steep-wave configuration is more likely to excite higher mode than Lazy-wave configuration.

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  • 收稿日期:2021-03-09
  • 最后修改日期:2021-03-30
  • 录用日期:2021-04-01
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