Real sea waves are multidirectional, but most of present research are focused on the unidirectional wave. Special to the numerical wave basin based on OpenFOAM to simulate the propagation of multidirectional random wave and its interaction with structure has the insufficient of large amount of calculation, to overcome this problem, the coupling method is used based on the potential theory and OpenFOAM, and the amount of calculation is reduced and the computational efficiency is improved. Base on the coupling model, the multidirectional random waves and its interaction with a large-scale offshore wind turbine foundation are simulated. In the outer domain, the multidirectional random wave is generated by the potential theory quickly. The interaction of multidirectional waves with the offshore wind turbine foundation is simulated in the inner domain by solving the Navier-Stokes equation. It is found&nbsp;that the effect of the wave directionality is more obvious on the transverse force than on the normal force. The transverse force Fy has a very obvious tendency to increase as the directional spreading parameter s decreases. For multidirectional wave case s=5, the transverse force Fy cannot be ignored anymore and is about 46% of the normal force Fx.

Numerical Research on the Interaction of Multidirectional Random Waves With a Large-Scale Offshore Wind Turbine Foundation

Paper Proceedings: https://asmedigitalcollection.asme.org/OMAE/IOWTC2021/volume/84768

ASME 2021 International Offshore Wind Technical Conference (IOWTC2021)

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