M/F PhD position on Exascale Adaptive Mesh Refinement and GPU Algorithms for High-Fidelity CFD

Job Description

Thesis Subject

Context:
The European Centre of Excellence in Combustion for the Energy Transition (CoEC4ET, HORIZON-JU-EUROHPC-2026-COE-LH-01, grant 101319265) develops the next generation of Exascale-ready simulation technologies for low-carbon combustion systems. Building on the achievements of the CoEC project, CoEC4ET advances high-fidelity CFD, AI-enabled workflows, and interoperable software libraries to support predictive simulations on emerging and heterogeneous European supercomputers. The project brings together leading academic and industrial partners to develop scalable, performance-portable digital technologies and shared software components for applications ranging from fundamental benchmark configurations to industrial combustion systems in aviation, maritime transport, power generation, and energy-intensive industries. Within CoEC4ET, the CORIA laboratory will contribute to the development of scalable adaptive mesh refinement algorithms for heterogeneous CPU/GPU supercomputing architectures, advanced chemistry integration methods for spray combustion, and their integration into the project's flagship CFD software ecosystem, including the YALES2 platform and shared software libraries.
This PhD focuses on Adaptive Mesh Refinement (AMR) algorithms for heterogeneous GPU architectures and their integration into the YALES2 CFD platform.
Objectives:
• Develop GPU-supported AMR kernels (node insertion, node movement, edge splitting, edge swapping).
• Benchmark AMR and Lagrangian capabilities on EuroHPC GPU systems.
• Develop automated workflows translating OpenMP/OpenACC directives into architecture-agnostic pragmas.
Expected outcomes:
GPU-capable AMR algorithms, portable Exascale software components, benchmark campaigns on EuroHPC systems and high-impact scientific publications.

Your Work Environment

CORIA is a CNRS joint laboratory with INSA and University of Rouen. CORIA is a Mechanical Engineering Lab (200 people) fully devoted to reacting flows. This includes main interests in different fields as combustion, plasmas, spray studies, energetic processes. Approaches are experimental, with a great emphasis on optical methods as well as theoretical, through modeling of reacting flows. The laboratory is thus developing experimental diagnostic as well as new theoretical tools. Its mission is to provide excellence in scientific research and development, and it maintains strong links with industry.

Constraints and risks

None identified

Supplementary information
The candidate must have a degree in engineering and/or a Masters in Mechanical Engineering or Applied Mathematics
Skills required:
Computational Fluid Dynamics, Numerical analysis, Object-Oriented Programming, High-Performance Computing

Language skills
Writing skills in English, ability to formulate/work on a scientific project

Ability to work in an international team

Applications must include a detailed CV; at least two references (people who may be contacted); a cover letter of one page; a one-page résumé of the dissertation for the Masters; grades for the Masters 1 or 2 or the engineering degree.

Compensation and benefits

Compensation

2300 € gross monthly

Annual leave and RTT

44 jours

Remote Working practice and compensation

Pratique et indemnisation du TT

Transport

Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€

About the offer

About the CNRS

The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.

CNRS

The research professions