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Non-linear hydroelastic response of a monopile foundation in regular waves

Abstract : This paper presents an original contribution to the coupled hydroelastic simulation of offshore wind turbines foundations. A non-linear coupled simulation tool has been developed to calculate the response of these systems. The hydrodynamic loads are computed by the non-linear potential flow solver WSCN, developed at Centrale Nantes and based on the weak-scatterer theory. The response of the structure is calculated with a finite element analysis tool using an Euler-Bernoulli beam model. The two solvers are tightly coupled. A first case study is presented here. It consists of a uniform monopile foundation in regular waves. Numerical simulations are compared to results obtained with the SIMA software, which uses Morison equation and non-linear wave kinematics. The two simulation tools show a very good agreement in a series of regular waves up to the third-order load harmonic. Higher-order harmonics appear with WSCN in steep waves, which are not computed by SIMA.
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https://hal.archives-ouvertes.fr/hal-02870620
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Submitted on : Friday, March 19, 2021 - 6:28:14 PM
Last modification on : Wednesday, April 27, 2022 - 5:03:00 AM

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Leroy Vincent, Erin E. Bachynski, Jean-Christophe Gilloteaux, Aurélien Babarit, Pierre Ferrant. Non-linear hydroelastic response of a monopile foundation in regular waves. Journal of Physics: Conference Series, IOP Publishing, 2020, ⟨10.1088/1742-6596/1669/1/012007⟩. ⟨hal-02870620⟩

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