Research Posters 🎓

Focus on the 2026 edition

A dedicated area at the heart of the exhibition space was dedicated to display the selected posters, for all participants to discover and enjoy. All posters were reviewed by the jury. 

BEST POSTER: “Acceptability of French coastal people on eco-engineering for Floating Wind Farms" by Antoine DUBOIS - ISOMer Nantes Université

SPECIAL PRIZE FROM THE JURY: “Performance Optimization of a Whale-Inspired Oscillating Foil for Auxiliary Cargo Ship Propulsion" by Matthieu Abgrall - Bluefins 

PARTICIPANT’S AWARD: “Fish physiological stress response when exposed to wind turbine noise" by Thomas Soulard, Fondation OPEN-C

Take a closer look at the winning posters 🔎

Best Poster Award

Special prize from the Jury

Participants’ award

Our high qualified jury of experts

Join us for the ceremony 
on May 20, 2026 at 3:45pm in the Agora

Discover the poster presenters

POSTER 01 - Energy harvesting module for the exploitation of flow-induced vibrations in water current

Description
by F. KERHERVÉ, A. SCHMIDER, N. TONIONI & L. CORDIER - Institut Pprime UPR CNRS 3346 - Dept. FTC, Team Curiosity - Poitiers (FR) This work presents an energy harvesting module designed to exploit flow-induced vibrations of an elastically mounted rigid bluff body immersed in a water current. The system relies on manipulation of vortex-induced vibrations, where energy is transferred from the fluid flow to structural motion and converted into electricity through a motor–generator setup. A low-mass experimental platform with virtual damping and stiffness control enables real-time emulation of linear and nonlinear forcing laws, allowing optimization of harvesting efficiency under realistic flow conditions. Advanced metrology combined with machine-learning-based low-order modeling provides accurate characterization and prediction of the coupled fluid–structure dynamics. The modular design also enables the study of arrays of harvesters and wake-induced interactions, supporting scalability for potential increased technology readiness for green energy applications.

POSTER 02 - Basic design of a 2 GW floating offshore substation

Description
by : -Jean-Sébastien VERJUT - France Energies Marines -Tanguy COQUIO - France Energies Marines -Yohan PERCHER - Chantiers de l’Atlantique -Kevin MEHRING - Ifremer -Guillaume DAMBLANS - France Energies Marines -Jérémy BIOUD - France Energies Marines We defined the architecture of a Floating Offshore SubStation (FOSS) and achieved a basic design of the substation based on two different technologies of floaters : TLP and semi-submersible. We present the conclusion (advantages / drawbacks) for both solutions applied to a case study in southern brittany.

POSTER 03 - SLOOP: Optimising Offshore Monopiles Design - Stochastic Load Analysis & Advanced Soil-Pile Interaction

Description
by : ZhongSen LI (NU) | Seung-Yoon HAN (ECN) | Christelle ABADIE (UGE) NU : Nantes Université ECN : École Centrale de Nantes UGE : Université Gustave Eiffel Supported by ORACLE LabEx, the SLOOP project tackles a key industrial challenge in offshore wind: reducing uncertainty in monopile foundation design under stochastic environmental loads. By coupling advanced aero-hydrodynamic simulations with soil–pile interaction models, SLOOP provides a robust numerical framework to optimise monopile sizing and reduce CAPEX and LCOE.

POSTER 04 - CEFIR Project: Control of Floating Wind Turbines and Grid Integration

Description
by : IREENA: AIT-AHMED M., MACHMOUM M., SAIM A. LS2N: HAMIDA M.A., PLESTAN F. IIT Roorkee : CHAKRABARTY S. The CEFIR project aims to enhance Floating Offshore Wind Turbines. It develops robust adaptive control strategies to optimize energy production while reducing structural stress. It integrates energy storage systems to smooth power fluctuations. A Power Hardware-in-the-Loop test bench validates the overall system and control performance in real time.

POSTER 05 - Offshore Wind Acceptability in France: Public Preferences over Wind Turbine Tax Redistribution

Description
by : Joffrey Stary (LEMNA, Nantes Université) France introduced a wind turbine tax (€20,248/MW/year) to support offshore wind and improve social acceptance, yet opposition persists. Using a discrete choice experiment, this study analyzes preferences for tax revenue allocation and how they vary with exposure, location, and individual characteristics to inform better policy design.

POSTER 06 - Exploring the Potential of Low-Carbon Geopolymer Concretes under Cyclic Loading for Sustainable Marine Energy Infrastructure (EPSMEI)

Description
By : Iman A.N.Omrani (1), Marta Choinska Colombel (1), Marcin Koniorczyk (2), Harifidy Ranaivomanana (1) 1 Nantes University, GeM-UMR CNRS 6183, France 2 Lodz University of Technology, Poland Geopolymer concretes are promising for offshore wind foundations due to their low carbon footprint and high durability in marine environments. This study investigates their fatigue behavior under cyclic loading and its impact on durability. Mechanical tests, permeability measurements, and microstructural analyses are combined to develop a predictive model in damaged and chloride-exposed conditions

POSTER 07 - Securizing Offshore Wind Energy cables - Threats and Challenges

Description
by : Antoine Vion (Centre Nantais de Sociologie) Offshore wind farms raise significant maritime safety issues, which have received little attention internationally, according to the most recent literature reviews. The establishment of specific safety regulations is therefore essential, particularly for preventing and prosecuting accidents and acts of sabotage targeting related infrastructure.

POSTER 08 - GOWEST project - Governing Offshore Wind Efficient and Secure and Turbines

Description
by : Pierre-Alexandre Mahieu (LEMNA UR 4273), Séverine Misset, Antoine Vion (CENS, UMR 6025), Brice Trouillet (LETG , UMR 6554), Valérie Boré-Eveno (DCS, UMR 6297). Associate researcher: Caroline Devaux (IODE, UMR 6262). This innovative multidisciplinary approach of this research project will allow for an analysis of the issues from all angles, from territorial dynamics to power relations, including the evolution of the legal framework. The work program is structured into three work packages : governance system, discordances, levers of action. We will present both its research design and analytical framework.

POSTER 09 - Boat docking at a wind turbine, for actual sea state & real hull shape

Description
By : Laurent Barthélémy (ENSM) Method description In SEANERGY 2025, the author proposed a calculation based on a state control model, for a real state, which is an irregular wave, but for a mathematical hull. This time the method is refined with an actual hull shape. Main results and findings Compared to another publication, we find the same wave height criteria, but different wave length criteria.

POSTER 10 - Acceptability of French coastal people on eco-engineering for Floating Wind Farms

Description
By : Dubois A., Mahieu P-A., Bates A., Schoefs F. We investigated five French departments for residents' preferences on scenarios for the application and development of eco-engineering in Floating Wind Farms. The method used allowed us to estimate the willingness-to-pay per month (on the electricity bill) of respondents. The eco-engineering concept was generally well perceived and a significant positive willingness-to-pay was found.

POSTER 11 - Fish physiological stress response when exposed to wind turbine noise

Description
by Thomas Soulard (Fondation Open-C), Maeva Gonzalez (Ifremer), La Rochelle Université (CNRS – LIENSs), CREOCEAN, Cohabys, Université du Littoral Côte d’Opale (LOG) This poster presents the results from the 1 st offshore campaign from the ECHO project, aiming at better understanding the behavioural impact of noise generated by a floating wind turbine on fish. Two groups of juvenile seabass were caged in close proximity to the FLOATGEN floating wind turbine and outside the area of influence. Several indicators related to stress and growth were measured.

POSTER 12 - Biodiversity changes in soft-bottom benthic community - Effects induced by a floating wind turbine

Description
by Thomas Soulard (Fondation Open-C), Maeva Gonzalez (Ifremer) As part of VELELLA project (ADEME France 2030), we investigated the impact of the first French floating wind turbine (FloatGen, BW-IDEOL) on the structure and functioning of benthic fauna. We assessed how the species composition and functional traits of soft-bottom invertebrate communities change with the distance from the floater. This study is based on grab samples, over a two-year period.

POSTER 13 - Mussel-biofouled Mooring Chain Drag in Uniform Currents : Design Standard Comparison

Description
by Nazila Emamdoost (1,2), Franck Schoefs(1), Krish Thiagarajan Sharman(2) (1) Institute of Marine Substances and Organisms (ISOMer), Nantes University, France (2) Mechanical Engineering Department, University of Massachusetts Amherst, USA Biofouling increases surface roughness and effective diameter of offshore structures, leading to higher drag forces. This study investigates mussel biofouling effects on mooring-line cylinder. 3D-printed mussel sleeves developed at Nantes Université represent smooth and rough fouled conditions. Mussel growth increased drag by ~36% compared with smooth cylinders.

POSTER 14 - Performance Optimization of a Whale-Inspired Oscillating Foil for Auxiliary Cargo Ship Propulsion

Description
by M. ABGRALL (1,3), M. Sacher (2), P. Perali (2), B. Clément (1), R. Lecuyer-le-Bris (3) (1) ENSTA, Institut Polytechnique de Paris, Lab STICC, CNRS UMR 6285, France, (2) ENSTA, Institut Polytechnique de Paris, IRDL, CNRS UMR 6027, France, (3) BLUEFINS, France The reduction of fuel consumption and emissions in maritime transport relies on the development of auxiliary propulsion systems adapted to operational conditions. Among the most promising solutions, bio-inspired oscillating foils enable the conversion of vessel motions into propulsive thrust. However, the performance of such systems strongly depends on the encountered sea states. Consequently, for a given maritime route, the optimal foil geometry and control law are not unique. It is therefore necessary to develop design tools capable of identifying optimal system configurations (geometry and control) for various operating scenarios. In this context, the present work proposes an optimization framework based on Gaussian process surrogate models to jointly determine the optimal foil geometry and kinematics. The foil kinematics is described by two degrees of freedom (heave and pitch), considering both sinusoidal and non-sinusoidal trajectories. The approach relies on a bi-objective optimization strategy to explore the trade-offs between mean thrust and hydrodynamic efficiency, under constraints representative of an industrial application case. Hydrodynamic performances are evaluated using a potential flow solver, while optimal configurations are validated through high-fidelity viscous simulations (RANS). The results show that the use of non-sinusoidal trajectories, combined with bio-inspired geometries, can improve propulsive efficiency by up to 10% at fixed mean thrust, particularly at low Strouhal numbers. The developed tool provides a basis for the future development of adaptive control strategies under real operating conditions.

POSTER 15 - MP Multi-Use - Re-use scenarios for existing offshore monopiles infrastructure: Cost benefits of repurposing offshore wind infrastructure for tidal energy

Description
by Miguel de Matos e Sá, Luca Barbetti, Ozlem Ceyhan Yilmaz, Alexander Cattrysse (IMDC) In the next 10 years, 1GW of offshore wind faces decommission. Monopile(MP) MultiUse project assesses the tecno-economic, environmental and legal feasibility of reusing end-of-life monopiles for ocean energy. It evaluates MP-integrated designs, installation concepts, MP structural reliability, and LCOE. It demonstrates how monopile re-use can reduces ocean energy costs and decommissioning needs.

POSTER 16 - Marine Growth : Stakes for Floating Offshore Wind

Description
by Ziad MAKSASSIa, Sina POURZAHEDIb, Katherine COUGHLANc, , Lola HENNEUSEd, Franck SCHOEFSa (a) ISOMER, Institut des Substances et Organismes de la Mer, UR CNRS 2160, Nantes, Université de Nantes, France (b) Institut de Recherche en Génie Civil et Mécanique, GeM, UMR CNRS 6183, Université de Nantes, France (c) University college Cork, Ireland (d) Société AKROCEAN

POSTER 17 - Enhancing the Reliability of Decentralized Hybrid Renewable Energy Metering - Systems in Microgrids through Blockchain and Smart Meter Technologies

Description
by AL BAGAYOGO, PHD Student - Science and Engineering Research Laboratory, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University This paper presents a blockchain-based smart microgrid architecture designed to enhance the integration of renewable energy, facilitate real-time monitoring, and facilitate peer-to-peer (P2P) energy trading. The proposed system integrates a variety of distributed energy resources, including photovoltaic solar panels, wind turbines, and hydroelectric power, alongside smart meters and a decentralized blockchain-based energy management layer. The system operates using a Proof-of-Authority (PoA) consensus mechanism, which enables rapid and cost-effective validation of energy transactions. A 24-hour simulation revealed a renewable energy penetration rate of 82.4%, with photovoltaic and wind units generating 58 kW and 28 kW, respectively. The 80 kWh battery functions within a charge range of 34% to 89%, achieving an efficiency rate of 88.5%. The blockchain records 1,152 transactions daily, with a latency of 0.83 seconds, ensuring real-time traceability. Dynamic pricing varies between $0.84 and $1.26 per kWh, leading to a 17% reduction in costs for consumers. In comparison to centralized control, the proposed model enhances billing accuracy to 99.7%, boosts renewable energy utilization by 12%, and decreases latency by 69%. Overall, this architecture supports transparent, secure, and cost-effective management of renewable energy for future decentralized smart grids.

POSTER 18 - Study of blocking effects in the operation of marine tidal turbines - Multi-Rotor Systems

Description
by: L. JOUENNEa , W. R’GHIGHAa , A. SANTA CRUZa , F. HADRIa,b , A. ZALTaand S. GUILLOUa a. LUSAC, Cherbourg-en-Cotentin – Univ. of Caen ; b. LISV, Univ. of Versailles Saint-Quentin-en-Yvelines The LUSAC laboratory conducts research on tidal turbines, this work focuses on Multi-Rotor Systems, composed of several closely spaced turbines. This blockage is expected to improve electricity production. An instrumented model is being developed to study the interaction between the ambient flow (PIV) and the hydrodynamic forces acting on the system. The rotors are modelled using porous disks.

POSTER 19 - Taming Saint-Nazaire’s Waves - From Laboratory Model to Pilot Farm: Experimental WEC in Saint-Nazaire

Description
by Y. DIAB, F. BENDAHMANE – Polytech Nantes This project validates small‑scale wave energy prototypes for Saint‑Nazaire, a region with high wave potential and SEM‑REV infrastructure. Two small‑scale wave energy converter prototypes – a point‑absorber buoy with a linear generator and an oscillating water column (OWC) equipped with a Wells turbine – were designed, built from , and experimentally validated in a laboratory wave tank.
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