Time domain hydrodynamics at panel level: an application to the structural analysis of Telwind

The current modelling approaches for Floating Offshore Wind Turbines (FOWT) present some limitations in the representation of the fluid-solid interaction. Mainly, they do not consider full flexibility of the floating body, so internal forces on the platform cannot be resolved. ESTEYCO has developed...

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Bibliographic Details
Published in:Journal of physics. Conference series 2022-04, Vol.2257 (1), p.12009
Main Authors: Rodriguez-Lôpez, E, Moreno-Narrillos, C, Rueda-Guglieri, F, Yáñez-González, Á
Format: Article
Language:English
Subjects:
Cables
Computer simulation
Equations of motion
Finite element method
Flexibility
Floating bodies
Floating platforms
Fluid mechanics
Fluid-solid interactions
Hydrodynamic pressure
Hydrodynamics
Internal forces
Mathematical models
Modelling
Offshore structures
Physics
Rigid structures
Structural analysis
Time domain analysis
Wind turbines
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Summary:The current modelling approaches for Floating Offshore Wind Turbines (FOWT) present some limitations in the representation of the fluid-solid interaction. Mainly, they do not consider full flexibility of the floating body, so internal forces on the platform cannot be resolved. ESTEYCO has developed a novel methodology to couple all the actions (hydrodynamics, structural, aerodynamics, control, etc.) that are applied over a FOWT concept. The main novelty of this approach resides in selecting Abaqus (well stablished Finite Element –FE– tool) as the central solver of the motion equations, naturally enabling inclusion of full platform flexibility (and not only rigid bodies linked by flexible members). The inclusion of the coupled hydrodynamic actions (highly dependent on platform movement) is performed through a novel tool: EST-PANEL which provides the time domain hydrodynamic pressure at panel level. This approach is thoroughly validated against other well established modelling techniques showing outstanding agreement both in platform movement and internal tension of cables. This methodology has been developed to support the design and development of ESTEYCO’s own technology: Telwind. The current approach thus provides a unique fully coupled FE tool to perform a detailed structural assessment of the floating platform even from the earliest conceptual stages of the design. In addition, the current approach can be easily extended to simulation of some loading scenarios (cable breaking, transient deployment, non-linearities) that are not easy to model with other simulation tools.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2257/1/012009