ESRs

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Work-package: 4 - Wind Resource Assessment in Deep Waters
Research topic: Wind resource assessment in deep waters through space-distributed measurement systems
Host: Centrale Nantes (ECN)
Host Country: France
Home Country: Brazil
Supervisors: Prof. Sandrine Aubrun and Dr. Yves Perignon
Duration: 36 months


Research programme:
1.    Wind resource characterization of the ECN offshore test site: SEM-REV;
2.    Relevance and reliability of the deployed instrumentation to assess the wind resource on the specific SEM-REV site;
3.    Relevance and reliability of the deployed instrumentation to assess the wind resource at other sites;
4.    A set of transfer functions between the different measurement systems in order to identify the best compromise between robustness, reliability and costs to assess wind resource in deep waters.

Planned secondments: University of Stuttgart (3 months) and EOLFI (3 months)



 

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Research topic:Assessing the measurements of offshore wind conditions using LiDAR on floating platforms for resource assessment and power curve verification
Work-package: 4 - Wind Resource Assessment in Deep Waters
Host: University of Stuttgart (USTUTT)
Host Country: Germany
Home Country: Germany
Supervisors: Prof. P.W. Cheng and Oliver Bischoff
Duration: 36 months

Research programme:
1.    General study of the advantages and disadvantages of different possibilities to measure wind conditions offshore with floating structures;
2.    Analytical comparison of different methods to measure wind conditions with a LiDAR from different floating platforms and positions (e.g. floating LiDAR, nacelle-based, transition piece based, floater based) for wind resource assessment and power curve determination;
3.    Development of new and extension of existing simulation environments for LiDAR measurements on floating structures performing wind field reconstruction;
4.    Verification of the simulation environment with real measurement data;
5.    Assessment of the uncertainties of LiDAR measurements on different floating structures.

Planned secondments: Fraunhofer IWES (3 months) and IDEOL (3 months)

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Research topic: Offshore wind resource at deep sea sites applying satellite data and numerical modelling
Work-package: 4 - Wind Resource Assessment in Deep Waters
Host: Technical University of Denmark, Wind Energy Department (DTU)
Host Country: Denmark
Home Country: Canada
Supervisor: Dr. Charlotte Bay Hasager
Duration: 36 months

Research programme:
1.    Handle floating LiDAR data, and correct for motion including ship-based LiDAR, such that wind climate can be obtained with limited uncertainty;
2.    Knowledge on the usability of satellite SAR winds at deep sea sites will be compared to numerical model results over 10 years, to estimate inter-annual variability. This result is important as measurement campaigns typically are much shorter;
3.    Evaluation of the advantages and limitations of numerical modelling versus satellite ocean winds and observations from floating buoy/ship-based LiDAR, to assess wind resource statistics, and to provide maps of potential resources at selected deep sea sites for demonstration.

Planned secondments: Fraunhofer IWES (3 months) and VORTEX (3 months)

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Research Topic: High-fidelity determination of wave load and load effects for floating wind turbine hulls subjected to severe wave conditions
Work-package: 5 – Advanced Floater Analysis
Host: Norwegian University of Science and Technology (NTNU)
Host Country: Norway
Home Country: China
Supervisors: Assoc. Prof. Erin Bachynski and Prof. Michael Muskulus
Duration: 36 months

Research programme:
1.    Development of numerical methods for determining highly nonlinear wave loads and load effects on floating offshore WTs;
2.    Improved engineering load models based on validated high-fidelity simulations. Validation will be carried out using experimental results obtained in the FLOAWER project or other ongoing international projects;
3.    Better understanding of long-term extrema for local structural design through use of improved engineering models.

Planned secondments: Centrale Nantes or University College of Cork (3 months) and GICON (3 months)

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Research Topic: Hydrodynamic analysis and numerical modelling of heave-plates dedicated to the design of floating wind turbinesWork-package: 5 – Advanced Floater Analysis
Host: Centrale Nantes (ECN)
Host Country: France
Home Country: South-Korea
Supervisors: Dr. Jean-Christophe Gilloteaux and Prof. David Le Touzé
Duration: 36 months



Research programme:
1.    Hydrodynamic database for various geometry, column-diameter/heave-plate diameter ratio and heave-plate depth;
2.    Improved engineering models for modelling heave-plates.

Planned secondments: Norwegian University of Science and Technology (3 months) and IDEOL (3 months)

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Research Topic: Advanced physical Modelling Methods for Floating wind turbines
Work-package: 5 – Advanced Floater Analysis
Host: University College of Cork (UCC)
Host Country: Ireland
Home Country:  Iran
Supervisors: Prof. Jimmy Murphy and Dr. Cian Desmond
Duration: 36 months

Research programme:
1.    Perform a set of high quality validation from physical testing of an elemental floating object;
2.    Perform a set of high quality validation data for a floating wind energy platform with both aerodynamic and hydrodynamic effects;
3.    LCOE analysis outputs.

Planned secondments: Centrale Nantes (3 months) and Aerodyn (3 months)

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Research Topic: Advanced design and optimized cost of mooring systems
Work-package: 5 – Advanced Floater Analysis and 7 - System Design to Reduce LCOE
Host: Norwegian University of Science and Technology (NTNU)
Host Country: Norway
Home Country: Germany
Supervisors: Prof. Michael Muskulus and Assoc. Prof. Erin Bachynski
Duration: 36 months


Research programme:
1.    A parametric cost model for different mooring system technologies, including sea bed anchors and complex multi-floater layouts;
2.    A methodology to evaluate mooring system reliability, taking into account uncertainties in wave- and current-induced mooring system dynamics and loads;
3.    A methodology for robust optimization of mooring systems with respect to performance constraints, system reliability and cost;
4.    A comprehensive guideline on mooring system design for floating WTs, to support industrial end-users and future research.

Planned secondments: University of Rostock (3 months) and Vicinay (3 months)

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Research Topic: Multi-Used design components for different kind of floating sub-structures
Work-package: 5 – Advanced Floater Analysis and 7 - System Design to Reduce LCOE
Host: University of Rostock (UROS)
Host Country: Germany
Home Country: France
Supervisors: Dr. Frank Adam and Prof. Uwe Ritschel
Duration: 36 months

Research programme:
1.    High-fidelity CFD mooring line analysis compared to a multi-body simulation approach to consider dynamic effects of inertia and viscous damping in the design;
2.    Multi-used structural components for different kind of floaters to reduce production and maintenance costs and in the end the LCOE;
3.    A comprehensive guideline on multi-used structural components on design for floating WTs, to support industrial end-users and future research.

Planned secondments: WAVEC (3 months) and GICON (3 months)

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Research Topic: Horizontal and vertical axis WT aerodynamic modeling and testing
Work-package: 6 – Dynamics of wind turbines
Host: Politecnico di Milano (POLIMI)
Host Country: Italy
Home Country: Costa Rica
Supervisors: Prof. Alessandro Croce and Dr. Stefano Cacciola
Duration: 36 months

Research programme:
1.    From high-fidelity to engineering aerodynamic models update (for VAWT and HAWT);
2.    Development of new wind turbine and wind farm control technologies and wind tunnel experimental campaign (for VAWT and HAWT);
3.    Development of advanced methods for WT monitoring and rotor imbalance detections and wind tunnel experimental tests (for VAWT and HAWT).

Planned secondments: CNR-INM (3 months) and Cartflow (3 months)

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Research Topic: Dynamics and interaction of floating turbines
Work-package: 6 – Dynamics of wind turbines
Host: University of Oldenburg (UOLD)
Host Country: Germany
Home Country: France
Supervisors: Prof. Joachim Peinke and Dr. Michael Hölling
Duration: 36 months
Research programme:
1.    Experimental investigations of a turbine array of model WTs mimicking floating motions exposed to stochastically realistic wind fields;
2.    Analysis of resulting turbine’s dynamic response;
3.    Development of a stochastic description of the overall floating WT system.

Planned secondments: Politecnico di Milano (3 months) and GICON (3 months)




 

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Research Topic: Ability of vertical axis wind turbines to be a competitive alternative to horizontal axis wind turbines for floating offshore applications
Work-package: 6 – Dynamics of wind turbines
Host: CNRS-LEGI (CNRS)
Host Country: France
Home Country: The Netherlands
Supervisors: Dr. Stéphane Barre and Assoc. Prof. Christophe Sicot
Duration: 36 months

Research programme:
1.    Have a fine mapping of the wake of the WT;
2.    Propose a simplified modeling of the wake in order to be able to simulate it in farm configurations;
3.    Validate the results obtained in wind tunnel by experiments on a floating system.

Planned secondments: Ecole Nationale Supérieure de Mécanique et d’Aérotechnique (3 months) and Hydroquest (3 months)

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Research Topic: Integrated design and LCOE minimization of horizontal and vertical axis wind turbines.
Work-package: 7 - System Design to Reduce LCOE
Host: Politecnico di Milano (POLIMI)
Host Country: Italy
Home Country: Turkey
Supervisors: Prof. Alessandro Croce and Assoc. Prof. Carlo Emanuele Dionigi Riboldi
Duration: 36 months

Research programme:
1.    Update of existing rotor/tower design tool with the platform sizing for offshore WTs;
2.    Update of existing LCOE mathematical models for design tools and reduction of the LCOE through an integrated design;
3.    Comparison between optimal horizontal axis and vertical axis configurations;
4.    Guidelines for future WT design.

Planned secondments: Norwegian University of Science and Technology (3 months) and EOLFI (3 months)

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Research Topic: System design to minimize the LCOE of Floating Offshore Wind
Work-package: 7 - System Design to Reduce LCOE
Host: WAVEC/Offshore Renewables (WAVEC)
Host Country: Portugal
Home Country: The United Kingdom
Supervisors: Dr. Jose Candido and Assoc. Prof. Luis Gato
Duration: 36 months




Research programme:
1.    Development of techno-economic model to assess FOW projects;
2.    Development of comprehensive cost database (for WTs, floating platforms, moorings, anchors and electric components and sub-systems);
3.    Delivery of system design that minimizes LCOE.

Planned secondments: Politecnico di Milano (3 months) and EOLFI (3 months)