Organisation/Company Ecole Centrale de Nantes Department LHEEA Research Field Engineering » Maritime engineering Engineering » Mechanical engineering Researcher Profile Recognised Researcher (R2) Positions Postdoc Positions Country France Application Deadline 29 Nov 2024 - 23:59 (Europe/Paris) Type of Contract Temporary Job Status Full-time Hours Per Week 35 Offer Starting Date 1 Jan 2025 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No
Offer Description Context
Ecole Centrale Nantes has a new postdoctoral position available within the framework of FLORIDA, a French-German project led by Ecole Centrale Nantes (France) and the University of Oldenburg (Germany). The overall objective of this project is to increase the technical maturity and the cost competitiveness of floating offshore wind energy, with focus on the wake of a wind turbine (WT) and its influence on another one located downstream. This research project is bilaterally financed by the French National Research Agency (ANR) and the German Research Foundation (DFG).
The project is composed of the following tasks:
Wind tunnel tests of a wind turbine with different inflow conditions and motion patterns; measurement of the wake effects (wake behavior and meandering);
Generation of realistic unsteady waked wind fields, based on the inflow conditions and induced wakes measured in task 1;
Wave tank testing, considering a floating wind turbine in waked wind fields (generated in task 2) and study the response of the turbine and its substructure.
In particular, the third task is conducted at the hydrodynamic and ocean engineering wave tank of Ecole Centrale Nantes. The experiments will use a real-time hybrid method with propellers to represent the aerodynamic loads acting on the rotor [1]. The hydrodynamic and mooring loads will be physically represented in the wave tank. This approach enables to consider a wide variety of inflow wind fields, including different waked configurations. The effects of an upstream turbine on the dynamic response of the downstream turbine will be studied with this set-up.
To fulfill this task, Ecole Centrale Nantes (ECN) is seeking a postdoctoral researcher to work at LHEEA Lab (CNRS joint research Unit) to be involved in the wave tank experiments. Their role will be to:
Study the model configuration and the choice/generation of test conditions
The experimental model is being designed in Ecole Centrale Nantes. The mooring system and test conditions (environmental conditions, wind turbine controller) need to be studied and defined at model scale. This will be done in agreement with the different partners, industry standards, and scientific problems at stake.
Be involved in the team carrying out the experimental campaign in the wave tank
The real-time hybrid experimental approach implies a real-time simulation, performed with a simulation tool (i.e. OpenFAST [2]). Coupled simulation need to be performed and all input files need to be prepared and tested for the real-time simulations. A strong involvement is also needed during the tests in the wave tank.
Data processing and analysis, scientific writing
Eventually, the measurements will be processed and analysed. The coupled response of experimental models under waked wind conditions will be studied. Fully-coupled simulations will be performedwith OpenFAST and compared to the wave tank measurements. The analysis of this data will then be used for publication.
Objectives / Expected results
Construction of an experimental database in wave tank conditions
Comparison of the experimental measurements with fully-coupled simulations
Work in a collaborative environment through the active participation to international consortia.
Write project reports and deliverables
Write scientific publications
References
[1] Bonnefoy, F., Leroy, V., Mojallizadeh, M. R., Delacroix, S., Arnal, V., & Gilloteaux, J. C. (2024). Multidimensional hybrid software-in-the-loop modeling approach for experimental analysis of a floating offshore wind turbine in wave tank experiments. Ocean Engineering , 309, 118390.
PhD in Ocean Engineering, Fluid Dynamics, or Physical Oceanography with background knowledge on wave mechanics
Knowledge of the marine environment (mandatory)
Experience in experimental campaigns and data analysis
Experience of dynamic simulation of floating wind turbine
Good knowledge of a scientific language (Python, Fortran, Matlab, …)
Autonomous and dynamic
Ability to interact with researchers working on numerous and varied research topics
Languages ENGLISH Level Excellent Languages FRENCH Level Basic
Research Field Engineering » Maritime engineeringEngineering » Mechanical engineeringEnvironmental science » Earth science Years of Research Experience 4 - 10
Additional Information Working conditions:
12-month fixed-term contract, with the possibility of renewal - open to contract staff and civil servants
Full-time position - based in Nantes
Flexible work cycles (possibility of working 4.5 days)
RTT + additional vacations
Telecommuting possible
Teleworking allowance
Free parking
Sustainable mobility bonus (if cycling or car-pooling)
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