Informations générales
Entité de rattachement
Le CEA est un acteur majeur de la recherche, au service des citoyens, de l'économie et de l'Etat.
Il apporte des solutions concrètes à leurs besoins dans quatre domaines principaux : transition énergétique, transition numérique, technologies pour la médecine du futur, défense et sécurité sur un socle de recherche fondamentale. Le CEA s'engage depuis plus de 75 ans au service de la souveraineté scientifique, technologique et industrielle de la France et de l'Europe pour un présent et un avenir mieux maîtrisés et plus sûrs.
Implanté au cœur des territoires équipés de très grandes infrastructures de recherche, le CEA dispose d'un large éventail de partenaires académiques et industriels en France, en Europe et à l'international.
Les 20 000 collaboratrices et collaborateurs du CEA partagent trois valeurs fondamentales :
• La conscience des responsabilités
• La coopération
• La curiosité
Référence
2024-32768
Description de l'unité
The Research Institute for Nuclear Systems for a Low Carbon Energy Production (IRESNE) is one of three institutes forming the Energies Division of the CEA (French Alternative Energies and Atomic Energy Commission). IRESNE leads studies on low carbon energy production systems using or adding value to energy from nuclear technology sources. It also provides support for experimental reactors and nuclear propulsion systems design.
Within IRESNE and its Section of Industrial Components and Processes (STCP, part of the Department of Nuclear Technology), the Laboratory of Hydro-mechanical Experiments and studies (LETH) carries out research and development activities (both experimental, numerical and analytical) to improve knowledge of hydro-mechanical and thermal-hydraulic behaviour of components from reactor cores and their cooling circuits, under nominal and accidental conditions.
Description du poste
Domaine
Thermohydraulique et mécanique des fluides
Contrat
Stage
Intitulé de l'offre
Internship - Numerical study of turbulent flows in the bottom of fuel assemblies H/F
Sujet de stage
Fuel assemblies are key components of reactor cores. They are made up of small-diameter tubes between which a highly turbulent flow circulates. These rods are held together by grids, and other geometric features may also be found at the bottom of the assembly. Amplified by these features, turbulent structures induce vibrations that can lead to fretting wear damages.
The topic of this internship is to study numerically the effect of the different geometrical features on turbulent flow quantities in order to understand their role in flow induced vibrations.
Durée du contrat (en mois)
6
Description de l'offre
It could include the following activities (non-exhaustive list):
-Brief literature review on turbulent flows in core fuel sub-assemblies
-Data set configuration for Computational Fluid Dynamics (CFD) calculations (CAD, Meshing, solver settings)
-Analysis of computation results
You will be mostly in charge of CFD numerical studies. You will need understanding of fundamentals of fluid mechanics (turbulent flows) and numerical methods (finite differences, Fourier transform…). It is important you are also fluent in English since most of relevant literature on the topic is in English. You don't need to have a previous experience or knowledge of turbulent flow in reactor cores.
Moyens / Méthodes / Logiciels
TrioCFD / Code SATURNE / SALOME / Paraview / Python
Profil du candidat
You are preparing an engineering degree (MSc level) or equivalent, with major in fluid dynamics.
Required skills & knowledge: CFD, turbulence modelling, meshing, numerical methods.
Please send us your application to join our lab, and be part of CEA innovating projects !
In accordance with CEA commitment to the integration of people with disabilities, this job position is open to everyone. The CEA offers accommodation and/or organisational possibilities.
Localisation du poste
Site
Cadarache
Localisation du poste
France, Provence-Côte d'Azur, Bouches du Rhône (13)
Ville
Saint-Paul-lez-Durance
Critères candidat
Langues
- Anglais (Courant)
- Français (Courant)
Diplôme préparé
Bac+5 - Diplôme École d'ingénieurs
Formation recommandée
MSc with major in fluid dynamics
Possibilité de poursuite en thèse
Non
Demandeur
Disponibilité du poste
01/02/2024