Postdoctoral position on numerical fluid-structure interaction (F/M/X)
- Reference : PDRA-DRACCAR-numerical
- Position type: Fixed-term contract
- Duration: 18 month
- Localisation: Le Havre (76) - Université Le Havre Normandie
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Job Description
Phenomena of fluid impact on structures are of major importance worldwide, and have attracted considerable research interest in recent years. This problem concerns a wide range of engineering applications, from coastal & offshore engineering to marine construction. This is particularly the case for offshore wind applications, such as bottom mounted offshore wind turbines, when regular waves or possibly extreme waves are impinging the wind turbine foundation. These impacts, whether cyclic or impulsive, generate fluid-structure interactions that may endanger the structure and possibly reduce its life-time. The structural behaviour workpackage of DRACCAR R&D programme aims at tackling these impact phenomena and related fluid-structure interaction using several approaches.
The choice of solver has not yet been finalized, although the team has a good knowledge of OpenFOAM and past experience with SPH codes. The aim of this position is to set up and analyze the ability of the chosen numerical method to handle these cases of fluid-structure interaction. First, the computations of the lab. scale experiments will be conducted, enabling experimental validations of the numerical results. Then, some computations impacts at full scale will be considered. Therefore, the chosen software suite should be able to solves at least these tow configurations. Also, comparisons & validations with experiments both at lab. and in situ scale with be performed. In general, the recruited person will have to be able to show a certain degree of autonomy on the criteria to choose the different codes, or even a single fluid-structure interaction code. She/he should also be able to make suggestions.
Missions
- Based on a previous work performed in the framework of the project, continuation of the bibliography on the various numerical FSI models available and choice of the best solution (free/open-source software will be preferred)
- Installation and familiarization with the chosen numerical environment and first simulations
- Reproduction of a representative configuration of cyclic FSI loading (non-breaking waves) on the mockup-scale structure
- Analysis of results in terms of pressure, deformation, displacement and overall force exerted
- Still at model scale, reproduction of a configuration representative of impulsive FSI loading (breaking waves) on the structure
- Analysis of results for these impulsive impacts in terms of pressure, deformation, displacement and overall force exerted
- Prospects for the possibility of using this software suite for the real case of FSI on the Fécamp offshore mast (In-situ scale)
- Writing scientific publications and participation to an international conference
Required Skills
- The good candidate in a Doctor (Post-Doc) or possibly an MSc student (Rsearch Assistant) interested in Fluid Mechanics, Computational Fluid-Dynamics (CFD), Structural
Mechanics, and more generally numerical computations skills. Interest in renewable energy, offshore wind energy and energetics aspects will be a plus - Python/matlab, GNU/Linux, Latex
- Good commend of numerical method, previous experience in CFD and/or structure computations will be highly appreciated
- Previous experience in marine hydrodynamics, experimental/numerical cross comparisons
- A knowledge of reading, writing and speaking English is strongly recommended for the successful completion of this work
Job : Postdoctoral position on numerical fluid-structure interaction (F/M/X)
Reference : PDRA-DRACCAR-numerical
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