Dynamic Model for Catenary Mooring: Experimental Validation of the Wave Induced Load
Dynamic Model for Catenary Mooring: Experimental Validation of the Wave Induced Load
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悬链线系泊动态模型：波浪诱发载荷的实验验证
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
P. Ruol
中科院分区：
文献类型：
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作者：
L. Martinelli;Alberto Spiandorello;A. Lamberti;P. Ruol
本文介绍了悬链线系泊线（或海底电力电缆）的动态模拟模型。一般来说，系泊线除了承受与其所连接的船舶的运动引起的感应载荷外，还承受直接波浪载荷（例如阻力、惯性）。本说明的具体目的是通过与物理模型测试进行比较来呈现、校准和验证对直接波浪作用的数值响应。在硕士论文的框架内，测试是在帕多瓦大学图像系海事实验室的水槽中进行的。波浪引起的载荷是在顺应链条的导缆器处测量的，其特点是导缆器铰接到固定点，链条仅承受规则（稍微非线性）波浪引起的载荷。 Comsol Multiphysics 中描述链条动态运动的方程以弱形式编写。结论是，该模型很好地代表了风阻系数为1.2-1.4且应用于等于最大表观宽度的区域时的测试。
This note presents a model for the dynamic simulation of a catenary mooring line (or a submarine power cable). In general, mooring lines are subject to a direct wave load (e.g. drag, inertia) in addition to the induced load due to movement of the vessel to which they are linked. Specific aim of this note is to present, calibrate and validate the numerical response to direct wave action, by comparisons with physical model tests. Tests were carried out at the wave flume of the Maritime Laboratory of IMAGE Department, Padova University, within the framework of a Master thesis. Wave induced loads were measured at the fairlead of a compliant chain, with the peculiarity that the fairlead was hinged to a fixed point, the chain being simply subject to the load induced by regular (slightly non-linear) waves. The equations describing the dynamic movements of the chain in Comsol Multiphysics are written in weak form. It is concluded that the model well represents the tests when the drag coefficient is equal to 1.2-1.4 and applied to an area equal to the maximum apparent width.