Posters
Come meet the poster presenters to ask them questions and discuss their work
We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in industry and the academic community.
PO168: Modelling and hydrodynamic performance of a hybrid semisubmersible floating wind turbine platform with integrated oscillating water columns
Payam Aboutalebi, Postdoctoral researcher, Universidad Complutense de Madrid (UCM)
Abstract
This study presents the numerical design and performance assessment of a novel hybrid semisubmersible Floating Offshore Wind Turbine (FOWT) platform integrated with Oscillating Water Column (OWC) wave energy converters. The platform is based on the WINDMOOR concept, developed to incorporate three OWC chambers in each column. A comprehensive modelling approach has been developed from scratch, comprising three key stages: (1) mass modelling to accurately define the mass distribution across the entire system, (2) Morison modelling to evaluate viscous forces, and (3) panel modelling based on potential flow theory to generate hydrodynamic meshes and calculate added mass, hydrodynamic forces, and damping coefficients. The modelling has been implemented using Genie for geometry and mass definition, WADAM for hydrodynamic setup, and HydroD for numerical analysis. The system has been analysed both hydrostatically and hydrodynamically. In the hydrostatic analysis, ballast adjustments inside the columns were used to shift the centre of gravity and enhance platform stability, satisfying Norwegian Maritime Authority (NMA) stability requirements by verifying righting moments and wind heeling moments. Hydrodynamic analysis has been conducted through Response Amplitude Operator (RAO) evaluations. The results show that the integration of internal OWC chambers shifts the natural pitch frequency from 31 s (baseline Windmoor) to 35 s while reducing its peak amplitude significantly. For external chambers, the natural frequencies remain close to the baseline, but pitch amplitudes slightly increase. Similar trends were observed for roll motions. In all cases, the natural frequencies remain outside the range of wave excitation, indicating stable operation. This work demonstrates the feasibility of integrating OWCs for dual benefits—wave energy capture and platform motion reduction. While the study is numerical, the results suggest that a scaled prototype could be developed for industrial applications, particularly in configurations with external chambers, which offer greater air volume and potential for platform stability enhancement.
No recording available for this poster.
