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

Pierre-Yves Wuillaume (1) , Pierre Ferrant (1) , Aurélien Babarit (1) , François Rongère (1) , Mattias Lynch (2) , Adrien Combourieu (2)

1 LHEEA - Laboratoire de recherche en Hydrodynamique, Énergétique et Environnement Atmosphérique
2 INNOSEA

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.

Mots clés: Marine operations; numerical modeling; multibody dynamics; potential flow theory; weak-scatterer

Domaines: Mécanique des fluides [physics.class-ph]; Energie électrique

Pierre-Yves Wuillaume, Pierre Ferrant, Aurélien Babarit, François Rongère, Mattias Lynch, et al.. Comparison between experiments and a multibody weakly nonlinear potential flow approach for modelling of marine operations. 37th ASME International Conference on Ocean, Offshore and Artic Engineering (OMAE), 2018, Madrid, Spain. ⟨10.1115/OMAE2018-77694⟩. ⟨hal-01986162⟩