Wave loads on ocean infrastructure increase as a result of waves passing over abrupt depth transitions
Wave loads on ocean infrastructure increase as a result of waves passing over abrupt depth transitions
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DOI：
10.1007/s40722-022-00269-4
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发表时间：
2022-11
影响因子：
1.9
通讯作者：
Zhenhao Li;T. Tang;Yan Li;S. Draycott;T. S. van den Bremer;T. Adcock
中科院分区：
文献类型：
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作者：
Zhenhao Li;T. Tang;Yan Li;S. Draycott;T. S. van den Bremer;T. Adcock
已知水深的突变会导致异常的自由表面波统计。本研究考虑这是否会转化为海上基础设施的异常负荷。一个完全非线性的数值模型，仔细验证实验。从数值模型的波浪运动学被用作输入到一个简单的波浪载荷模型。我们发现增强倾覆力矩，增加约20%，发生在几个波长的距离后，突然的深度过渡。对于1：1和1：3斜率，我们观察到类似的结果。这种增加在线性模拟中不会发生。
Abrupt changes in water depth are known to lead to abnormal free-surface wave statistics. The present study considers whether this translates into abnormal loads on offshore infrastructure. A fully non-linear numerical model is used which is carefully validated against experiments. The wave kinematics from the numerical model are used as input to a simple wave loading model. We find enhanced overturning moments, an increase of approximately 20%, occur over a distance of a few wavelengths after an abrupt depth transition. We observe similar results for 1:1 and 1:3 slopes. This increase does not occur in linear simulations.