nouveau cst fem desk

Séminaire scientifique sur l’éolien en mer

Le lundi 1er juillet de 14h00 à 16h00, France Energies Marines vous donne rendez-vous au Pôle Numérique Brest Iroise (Plouzané) pour un séminaire scientifique sur plusieurs thématiques de recherche en lien avec l’éolien en mer. Evénement public et entrée libre.

Exceptionnellement réunis à Brest, quatre experts de renommée internationale animeront ce séminaire qui abordera plusieurs sujets de recherche liés au dimensionnement des éoliennes en mer et à l’étude des effets des parcs EMR sur l’environnement :

cst erin bachynski polic 1
Erin Bachynski-Polić – Wind and aerodynamic loads on floating wind turbines: time- and frequency-domain models

Floating wind turbines have long resonance periods which can be excited by energy in the wind, and which can be particularly important for mooring system design.  There is therefore a need to model these responses properly in both mid-fidelity (typically time domain) and low-fidelity (typically frequency domain) tools. This presentation explores some recent work on the effects of atmospheric stability and wakes on floating wind turbines, and on aero-servo dynamic models in frequency domain.

Voir le replay

Erin Bachynski-Polić est professeure en conception et analyse de systèmes de récupération d’énergies marines renouvelables. Elle travaille au Norwegian University of Science and Technology (NTNU)

cst emmanuel branlard
Emmanuel Branlard – Improvements to the Blade Element Momentum Formulation of OpenFAST

In this work, we modify the blade element momentum algorithm of OpenFAST to improve its predictions under large skew inflow conditions, and large cone and prebend angles. For cone and prebend, we introduce a new coordinate system for the projection of the momentum balance. For skewed inflows, we use Glauert’s skew correction and introduce continuous extension of the model for high-thrust conditions. We present the rationale behind Glauert’s empirical model and discuss the different conventions possible for the axial induction factor. We verify the model against the higher-fidelity lifting-line vortex method and blade-resolved computational fluid dynamics, and we observe that the new implementation enhances the accuracy and reliability of OpenFAST’s aerodynamic modeling capabilities.

Voir le replay

Emmanuel Branlard est chercheur sur la modélisation multiphysique des éoliennes au National Renewable Energy Laboratory (NREL)

cst lenaig hemery
Lenaïg Hemery – Offshore renewable energy environmental effects research at Pacific Northwest National Laboratory

Pacific Northwest National Laboratory (PNNL) is one of the leading research organizations in the U.S. conducting research on the environmental effects of marine renewable energy and offshore wind. As the operating agent of the international initiative Ocean Energy Systems – Environmental, PNNL curates the Tethys knowledge base on environmental effects of wave, tidal, and wind energy technologies as well as publishes the State of the Science reports on the environmental effects of marine renewable energy development around the world. PNNL is also strongly involved in projects providing guidance and recommendations for environmental effects research and monitoring around floating and fixed offshore wind in U.S. waters.

Voir le replay

Lenaïg Hemery est benthologue marin et travaille au PNNL

cst thomas sauder
Thomas Sauder – Cyber-physical testing, or how robots are taking over the hydrodynamic labs.

How can marine structures that are strongly influenced by both wind and waves be studied in hydrodynamic laboratories that are not good wind tunnels? In this talk we will show how offshore wind turbines, or sail-assisted ships can studied by cyber-physical testing, that is the real-time combination of (hydrodynamic) experiments and (aerodynamic) simulations. Beyond that, we will show how the combination of marine disciplines and cybernetics, in the lab and at full-scale, enables a deeper understanding of existing and future floating systems.

Voir le replay

Thomas Michel Sauder est chercheur en essais cyber-physiques et applications aux technologies marines au Sintef

Ces experts font partie du Comité scientifique & technologique (CST) de France Energies Marines. Indépendants et faisant référence dans leur domaine de compétence, ils ont pour mission d’effectuer une relecture critique de notre feuille de route et de formuler des recommandations pour l’amélioration des projets de R&D portés par notre Institut.  

Crédits photos : Fill/Pixabay, NTNU, NREL, PNNL, Sintef

Écran en superposition fermé pour la recherche