Numerical development of fluid-structure interactions from quasi-static to dynamic responses for marine structures using OpenFOAM

id="offer-description" class="ecl-u-type-heading-2 ecl-u-mt-none ecl-u-mb-l">Offer Description Marine structures are designed to withstand harsh ocean environments while satisfying key limit states, particularly the Ultimate Limit State (ULS) and the Fatigue Limit State (FLS). In current industry practice, wave loads are typically computed using potential flow theory under the assumption of a rigid structure. These loads are then transferred to a finite element model through a one-way coupling approach to obtain structural deformation and internal loading. However, previous work conducted within the framework of the Chaire de recherche Bureau Veritas – Ecole Centrale de Nantes has shown that linear potential flow theory cannot accurately capture wave loads during extreme events, while Computational Fluid Dynamics (CFD) methods, solving the URANS equations, have successfully reproduced experimental data in such conditions. This quasi-static approximation is not always sufficient: extreme events can trigger hydro-elastic phenomena such as springing and whipping. These vibratory responses can significantly increase peak stresses and the number of fatigue cycles, both of which are critical parameters for ULS and FLS assessments. Such phenomena are receiving growing attention as floating structures become larger and slenderer to meet economic demands, for example, very large container ships (>400 m) and next-generation floating wind turbine platforms. This PhD project aims to deve