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
2024-31517
Description de l'unité
The position is located within the Research Institute on Nuclear Systems for Low-Carbon Energy Production (IRESNE), one of the three institutes of the CEA's Direction of Energies.
It conducts studies on low-carbon energy production systems using the energy produced by nuclear reactors:
- Water-cooled reactors of the current generation fleet
- Future reactors of all types, both thermal and fast spectrum.
Description du poste
Domaine
Thermohydraulique et mécanique des fluides
Contrat
Post-doctorat
Intitulé de l'offre
POST DOC - Multiphysics modelling and simulation of the CABRI research reactor H/F
Sujet de stage
Your main mission will be to contribute to the development of a multi-physics simulation tool and carry out associated studies to propose a new experimental campain dedicated to the validation of this simulation tool.
Durée du contrat (en mois)
24
Description de l'offre
The CABRI pool-type research reactor located at CEA Cadarache is dedicated to the analysis of nuclear fuel behavior during Reactivity-Injection Accident (RIA) in Pressurized Water Reactors. The reactor experimentally simulates power pulse transients.
Two models have been recently developed to simulate CABRI power transients.
- The first model at the assembly scale is a tool called PALANTIR, based on the CATHARE2 system thermal-hydraulics code with additional surrogate models to take into account the reactivity injected by 3He depressurization.
- The second model, at the pin-scale level, is based on a APOLLO3®/THEDI coupling via the C3PO platform. APOLLO3® solves the simplified transport equation. THEDI is used to model an unsteady 1D two-phase hydraulics flow in the core. It also solves the 1D heat equation for fuel thermics. For the simulation of each power transient in CABRI, PALANTIR provides the 3He density evolution versus time; these data are imposed as boundary condition in the APOLLO3®/THEDI coupling.
The goal of the post-doctoral position is first to develop a coupling between the APOLLO3®/THEDI core model at the pin-scale and the CATHARE model of the 3He depressurization system.
Then, with the support of this simulation tool, the second objective will be to define core configurations of interest and measurements for characterizing local multi-physics phenomena in CABRI with the support of simulation.
Profil du candidat
You are completing your doctorate in neutronics, reactor physics or thermal-hydraulics and you are looking for a first professional experience.
Tools used: Reactor physics (Apollo3), thermal-hydraulics (Cathare)
Send us your application to join the team and contribute to the CEA’s structuring and innovative projects!
In accordance with the commitments made by the CEA in favor of the integration of people with disabilities, this job is open to everyone. The CEA offers arrangements and/or organizational 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
Diplôme préparé
Bac+8 - Doctor of philosophy (PhD)
Formation recommandée
neutronics, reactor physics or thermal-hydraulics
Possibilité de poursuite en thèse
Non
Demandeur
Disponibilité du poste
01/04/2024