Wave loads on ocean infrastructure increase as a result of waves passing over abrupt depth transitions

Zhenhao Li, Tianning Tang, Yan Li, Samuel Draycott, Ton S. Van den bremer, Thomas A. A. Adcock

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
JournalJournal of Ocean Engineering and Marine Energy
Early online date23 Nov 2022
DOIs
Publication statusE-pub ahead of print - 23 Nov 2022

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