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Numerical Research on the Interaction of Multi-directional Random Waves with an Offshore Wind Turbine Foundation by Xinran Ji; Li Zou; Zhiwen Yang; Daoru Wang; Harry B. Bingham is a Engineering article available to read on EtoBox.

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Real sea waves are multi-directional, but most studies on wave-structure interaction have focused on unidirectional waves. In this study, a coupled model between a potential flow solver and OpenFOAM wave basin is adopted to investigate multi-directional wave loads on an offshore wind turbine foundation. The coupled model is extended to multi-directional wave states based on the single summation method combined with the JONS-WAP spectra. The numerical results are validated against the experimentally obtained values. Multi-directional waves are short-crested, the elevations are random in the wave field, and the wave pressures induced on the two sides of the cylinder are not symmetric about the principal wave direction, leading to a non-zero transverse force. In addition, the effects of wave directionality and relative ratio of foundation diameter and wavelength on wave loads are analysed. For multi-directional waves, the effects of wave directionality on transverse wave force are more sensitive than those on normal force. Wave run-up on the up-wave side increases as the directional spreading parameter decreases. In addition, wave directionality plays a complex role in the wave run-up

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Author

Xinran Ji; Li Zou; Zhiwen Yang; Daoru Wang; Harry B. Bingham

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)