Innovative hybrid numerical method in CFD:

This work is part of a continuation of the expertise of the LHEEA (Ecole Centrale Nantes) around different numerical methods for hydrodynamics, and in particular CFD methods on Eulerian grids (Finite Differences, Finite Volumes with adaptive refinement), Lagrangian particle methods (Smoothed Particle Hydrodynamics), and potential methods (High Order Spectral method). The aim here is to take advantage of the complementarity of these methods, by intensive use of coupling and ALE formulation (Arbitrary Lagrangian-Eulerian) in order to achieve a unified numerical tool, while abolishing the inherent difficulties to the implementation of meshes around complex geometries in interaction with the fluid. To do this, the following points will be explored and combined:

- Automatic consideration of complex geometries with "simplified" adapted meshes

- Generalization of spatial interpolations: hybridization of resolutions on Eulerian grid / Lagrangian particle resolution, with ALE relaxation zones

- Extensive use of adaptive grid/particle refinement (AMR/APR)

- Intensive parallelization of the solver on distributed memories, deployable on several thousand CPU cores

 

The position is for 18 months starting March 2023 or as soon as possible thereafter.

Applicants are asked to send a CV and details of few relevant publications.

Contacts: Guillaume Oger (guillaume.oger@ec-nantes.fr), Zhe Li (zhe.li@ec-nantes.fr), David Le Touzé (david.letouze@ec-nantes.fr)



Skills/Qualifications:

- PhD in fluid mechanics
- Experience in numerical methods ; CFD Methods
- Algorithms and High Performance Computing (HPC)
- C/C++ or Fortran
- Good English level