原文传递
Numerical simulation on dynamic behaviors of a towed underwater cable under the pure sway conditions
| 题名： | Numerical simulation on dynamic behaviors of a towed underwater cable under the pure sway conditions |
| 正文语种： | 中文 |
| 作者： | LIANG Xiaoyang MA Ning LIU Han Gu Xiechong |
| 作者单位： | Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China;School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240,China |
| 关键词： | numerical simulation underwater cable pure sway lump-mass-and spring method |
| 摘要： | The influence from the sway motion of the small towing ship on the underwater towed system should be considered when the underwater missions and tasks are to be finished safely and successfully.In this paper, a numerical approach is presented which focuses on the hydrodynamic performance and motion of the cable without towed body under the pure sway condition of the towing ship.Firstly, a three-dimensional dynamics model for the flexible cable is built based on the lump-mass and spring method.In the model, the cable is discretized into a finite amount of elements and the effect of the flow is taken into account.Dynamic equation is solved by the Runge-Kutta method.The appropriate time step is selected to calculate the dynamic tension and motion response of the cable under different flow speeds and different sway frequencies of the towing ship.The results show that, in the sway condition of the towing ship with the flow, the motion responses of the cable are complex, and both flow speeds and sway frequencies affect dynamic performance and attitude remarkably.When the flow rate grows, the tension of the cable decreases.When the sway frequency increases, the tension at the top of the cable increases, and the position of the endpoint changes drastically. |
| 会议日期： | 201709 |
| 会议举办地点： | 浙江舟山 |
| 会议名称： | 第十八届中国海洋(岸)工程学术讨论会 |
| 出版日期： | 0900-01-20 |
| 母体文献： | 第十八届中国海洋(岸)工程学术讨论会论文集 |
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