General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DES-26-0467
Thesis topic details
Category
Engineering science
Thesis topics
Investigation of polytopal methods apllied to CFD and optimized on GPU architecture
Contract
Thèse
Job description
This research proposal focuses on the study and implementation of polytopal methods for solving the equations of fluid mechanics. These methods aim to handle the most general meshes possible, overcoming geometric constraints or those inherited from CAD operations such as extrusions or assemblies that introduce non-conformities. This work also falls within the scope of high-performance computing, addressing the increase in computational resources and, in particular, the development of massively parallel computing on GPUs.
The objective of this thesis is to build upon existing polytopal methods already implemented in the TRUST software, specifically the Compatible Discrete Operator (CDO) and Discontinuous Galerkin (DG) methods. The study will be extended to include convection operators and will investigate other methods from the literature, such as Hybrid High Order (HHO), Hybridizable Discontinuous Galerkin (HDG), and Virtual Element Method (VEM).
The main goals are to evaluate:
1. The numerical behavior of these different methods on the Stokes/Navier-Stokes equations;
2. The adaptability of these methods to heterogeneous architectures such as GPUs.
University / doctoral school
Ecole Doctorale Galilée (Galiléé)
Paris XIII
Thesis topic location
Site
Saclay
Requester
Position start date
01/02/2026
Person to be contacted by the applicant
JOMEE Guillaume
guillaume.jomee@cea.fr
CEA
DES/DM2S/SGLS/LCAN
CEA - Direction des énergies
DES/DM2S/SGLS/LCAN
CEA centre de Saclay - Bât. 451
91190 Gif-sur-Yvette
+33(0)1 69 08 66 21
Tutor / Responsible thesis director
OMNES Pascal
pascal.omnes@cea.fr
CEA
DES/DM2S/SGLS/LCAN
CEA/Saclay DES-ISAS-DM2S-SGLS
91191 Gif sur Yvette Cedex
01.69.08.43.57
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