Comparison between experiments and a multibody weakly nonlinear potential flow approach for modelling of marine operations

• Published in: Volume 10: Ocean Renewable Energy
• Main Authors: Wuillaume, Pierre-Yves, Ferrant, Pierre, Babarit, Aurélien, Rongère, François, Lynch, Mattias, Combourieu, Adrien
• Other Authors: Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique (LHEEA), École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS), INNOSEA
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2018
• Subjects: Marine operations; numerical modeling; multibody dynamics; potential flow theory; weak-scatterer; [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]; [SPI.NRJ]Engineering Sciences [physics]/Electric power; Arctic
• Online Access: https://hal.science/hal-01986162; https://hal.science/hal-01986162/document; https://hal.science/hal-01986162/file/wuillaume2018.pdf; https://doi.org/10.1115/OMAE2018-77694

ASME 2018 37th International Conference on Ocean, Offshore and Arctic EngineeringVolume 10: Ocean Renewable EnergyMadrid, Spain, June 17–22, 2018Conference Sponsors: Ocean, Offshore and Arctic Engineering DivisionISBN: 978-0-7918-5131-9 International audience This paper presents validation tests for a new numerical tool for the numerical simulation of marine operations. It involves multibody dynamics modeling, wave-structure interactions with large amplitude body motion and cable’s dynamic modeling. Hydrodynamic loads are computed using the WS_CN weakly nonlinear potential flow solver, based on the weak-scatterer hypothesis. Large deformation of the wetted body surfaces can be taken into account. Firstly the ECN’s WS_CN solver capabilities are extended to multibody simulations. A first validation test is performed by comparing numerical results to the experimental data of [1]. Then, a second validation test is proposed. It consists in the ballasting operation of a spar. The experimental set-up is described.