Stage Bac+5 Hydrogen Modeling With Comsol H/F - CEA
Les missions du poste
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 coeur 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
The goal of this interniship is to use numerically advanced strategies for the calibration of our 3D multiphysics COMSOL models of Solid-Oxide-Electrolyzer-Cells (SOEC). Our current SOEC models involve different coupled physical phenomena such as electrochemical, thermal, fluidics and radiative processes. These phenomena are described by dedicated physical models, whose parameters requires careful calibration against targeted experimental data. The proposed methodology will use innovative Optimal Experimental Design (OED) strategies to address parameter correlation and identifiability issues during model calibration. The method, will consider the following steps:
1.identify operating conditions for which different physical mechanisms are expected to dominate (e.g., low current --> activation losses dominate)
2.Global screening inside these regimes to reduce the number of important parameters
3.apply OED and Fisher Information Matrix (FIM) criteria to identify experimental conditions that minimize parameter correlations.
A COMSOL model of the a SOEC cell setup operating both in steady (IV-curve) and dynamical (EIS) conditions will be developed during the stage. The model will be used to numerically reproduce experimental conditions that allow maximizing the sensitivity to the different model's parameters. The student will be able to learn an advanced calibration strategy that can be applied to any complex 3D FEM model, potentially involving several multiphysics and non-linear coupling."
Le profil recherché
Diplôme préparé : Bac +5 - Master 2
Compétences scientifiques : COMSOL, numerical analysis, FEM, data science, applied mathematics
Connaissances : Optimal Experimental Design, Electrochemistry, Fluid dynamics, CFD
Moyens/Méthodes/Logiciels : COMSOL multiphysics, OED and Fisher Matrix methods
