Vous êtes ici : GDR - Version française > Annonces > Thèses et Post-docs
-
Partager cette page
Appel à candidatures
|
Recherche, Emploi
Post-doc: High-fidelity simulation and flow analysis around cable transport systems in urban environments
Du 1 octobre 2024 au 30 avril 2026
LHEEA, Centrale Nantes, France
Contacts : Emmanuel GUILMINEAU emmanuel.guilmineau@ec-nantes.fr, Alban LEROYER alban.leroyer@ec-nantes.fr
Contacts : Emmanuel GUILMINEAU emmanuel.guilmineau@ec-nantes.fr, Alban LEROYER alban.leroyer@ec-nantes.fr
The post-doc will carry out numerical simulations of the flow around a free-moving gondola. These simulations will enable a very detailed study of the phenomena involved in pendulum dynamics. These studies are part of the ANR TURB-Cab project.
Ropeway cabins are a mechanical system suspended from a traction rope with several degrees of freedom (pendulum swing) and subject to the forces of the surrounding wind. As the articulated system is not fully locked and rigid, the action of the wind can set the suspended cabins in pendulum motion. This movement can become problematic for two main reasons. On the one hand, slight sway can cause discomfort for users. On the other hand, an amplified swaying movement can lead to safety problems and the closure of a line. These constraints then act as a brake on line performance and profitability. The constraints of comfort and performance/safety on cable transport lines require a good understanding of the pendular dynamics of cabins subjected to wind, and of the main parameters controlling them. One of the aims of the ANR TURB-Câb project is to provide detailed knowledge of the fluid-structure interaction phenomena between a suspended cabin and the surrounding "urban" wind.
The candidate will carry out numerical simulations of the flow around a free-moving gondola using the ISIS-CFD calculation code, solver developed by members of the METHRIC team at the LHEEA and integrated in the FINE/Marine computing suite distributed by Cadence Design Systems. The candidate will base his/her simulations on experimental measurements carried out by project members. These simulations will enable a very detailed study of the phenomena involved in pendulum dynamics. The first task will be to qualify the turbulence models for different angles of incidence. Then, when the model is free to move, a resolution of 1 to 3 degrees of freedom in rotation will be coupled with the flow simulation. Studies using a gust of wind will also be considered.
The tasks of the post-doc are:
• Manage three-dimensional simulations (mesh+simulation),
• Analyze results obtained from numerical simulations,
• Communicate with other project staff, in particular with the PPRIME laboratory for the development of a reduced order model,
• Write publications.
The candidate must hold a PhD in fluid mechanics with experience in numerical simulations for three-dimensional and turbulent flows and mesh generation for three-dimensional geometries. Experience in high-performance computing is a plus. Ability to communicate and add value to work is required. Fluency in English (reading, speaking, writing) is required.
The candidate will carry out numerical simulations of the flow around a free-moving gondola using the ISIS-CFD calculation code, solver developed by members of the METHRIC team at the LHEEA and integrated in the FINE/Marine computing suite distributed by Cadence Design Systems. The candidate will base his/her simulations on experimental measurements carried out by project members. These simulations will enable a very detailed study of the phenomena involved in pendulum dynamics. The first task will be to qualify the turbulence models for different angles of incidence. Then, when the model is free to move, a resolution of 1 to 3 degrees of freedom in rotation will be coupled with the flow simulation. Studies using a gust of wind will also be considered.
The tasks of the post-doc are:
• Manage three-dimensional simulations (mesh+simulation),
• Analyze results obtained from numerical simulations,
• Communicate with other project staff, in particular with the PPRIME laboratory for the development of a reduced order model,
• Write publications.
The candidate must hold a PhD in fluid mechanics with experience in numerical simulations for three-dimensional and turbulent flows and mesh generation for three-dimensional geometries. Experience in high-performance computing is a plus. Ability to communicate and add value to work is required. Fluency in English (reading, speaking, writing) is required.
https://emploi.cnrs.fr/Offres/CDD/UMR6598-EMMGUI-004/Default.aspx