LEGI - UMR 5519

Open Postdoctoral Fellowship in Turbulence Modeling and Simulation

Balarac Guillaume — 2026-05-19T11:16:53Z

This open postdoctoral position offers substantial freedom for candidates to propose an original research project aligned with the themes of the MOST team at LEGI. Possible topics include fundamental turbulence, high-fidelity simulations (DNS and LES), innovative numerical methods, physical or data-driven modeling, and interactions between turbulence and complex phenomena. The MOST team develops advanced numerical simulation approaches with the dual objective of improving the fundamental (...)

- Post-doc

Post-doctoral position: Goal-Oriented Multi-Fidelity Strategies for the Prediction of Turbulent Flows

Balarac Guillaume — 2026-05-19T11:16:29Z

This postdoctoral position focuses on the development of multi-fidelity strategies for the prediction of turbulent flows. The objective is to build a methodology capable of automatically selecting the most appropriate modeling level for a given quantity of interest while optimizing the trade-off between accuracy and computational cost. The work will rely on combining simulations of different fidelity levels, ranging from RANS calculations to high-fidelity LES, with various levels of (...)

- Post-doc

Post-doctoral Numerical Methods and Anisotropic Mesh Adaptation for RANS and LES Simulations

Balarac Guillaume — 2026-05-19T11:16:18Z

This postdoctoral position focuses on the development of advanced numerical methods and anisotropic mesh adaptation strategies for RANS and LES simulations of turbulent flows. The objective is to gain a deeper understanding of the interactions between numerical schemes, mesh resolution, and turbulence modeling in order to improve simulation accuracy and robustness. The research will address topics such as the effective accuracy of schemes on highly anisotropic meshes, pressure–velocity (...)

- Post-doc

Post-doctoral position: Prediction of Bistable Flows and Extreme Events through High-Fidelity Simulations and Dynamic Mesh Adaptation

Balarac Guillaume — 2026-05-19T11:16:08Z

This postdoctoral position aims to develop new predictive simulation approaches for turbulent flows exhibiting bifurcations, bistable dynamics, and extreme events. The project will combine detailed physical analysis of DNS and LES simulations with the development of innovative dynamic mesh adaptation strategies. One objective of the project is to identify precursor signatures associated with regime transitions. A second objective is to develop methods capable of automatically concentrating (...)

- Post-doc

PhD proposal: The Role of Katabatic Winds in Radiation Frost Processes on Slopes.

Brun Christophe — 2026-05-15T16:28:39Z

Titre Etude in situ des processus physiques en jeu dans les épisodes de gelées printanières. Rôle du vent catabatique sur le processus de gelée radiative en coteau.
Contexte La thèse sera consacrée à d'une part l'observation et l'étude in situ d'épisodes de gelées radiatives, et d'autre part l'analyse des moyens technologiques pour lutter contre les effets de ces gelées afin de caractériser leur efficacité, proposer des pistes d'optimisation et imaginer des solutions viables accessibles financièrement aux (...)

- Thesis scholarships

PhD position: Waves and turbulence in rotating superfluid helium-4

Juan Ignacio Polanco — 2026-04-30T07:52:50Z

Summary
Near absolute zero, liquid helium-4 enters a superfluid phase known as He II where it displays unique hydrodynamical properties. At finite temperatures between about 1 and 2 K, He II can be seen as a mixture of a viscous normal fluid and a superfluid without viscosity, whose rotational degrees of freedom are concentrated on so-called quantum vortices with atomic-scale thickness and quantised intensity. Remarkably, when He II is set in rotation, quantum vortices tend to align with (...)

- Thesis scholarships

Post-doctoral position: Quantum-inspired approaches for the simulation of turbulent flows

Juan Ignacio Polanco — 2026-04-27T08:52:24Z

Tensor networks are widely used in quantum mechanics to effectively and dramatically reduce the number of degrees of freedom required to represent complex quantum states. More recently, they have also emerged as a promising approach to represent and simulate various classical systems including turbulent flows.
The aim of this post-doctoral project is to explore the simulation of turbulent flows using tensor networks. The goal will be to determine whether such approach can enable the (...)

- Post-doc

PhD proposal: Monitoring cavitation erosion - damage prediction based on ultrasonic measurements and digital twins

Moreau Gabriel — 2026-03-18T13:31:56Z

Context
Cavitation occurs in a flow that is initially liquid when the static pressure reaches the liquid's vapor pressure, due to a drop in pressure or a local increase in flow velocity. This phenomenon then causes a phase change: part of the liquid water turns into vapor. The vapor structures thus formed are carried by the flow toward areas of higher pressure where they implode violently. These implosions generate pressure fluctuations, noise, and vibrations. When they occur near surfaces (...)

- Thesis scholarships

PhD proposal: Theoretical and experimental investigation of aero-acoustics in time-varying deformable waveguides: application to speech sound production

De-Marchi Olivier — 2026-03-12T16:52:18Z

Supervision, location and contact
Xavier Pelorson (DR CNRS)
Annemie Van Hirtum (DR CNRS)
The PhD will be carried out at LEGI (Grenoble Campus, France) with regular visits to LPP (Paris,France).
Application: online before 2026/05/10
Highly motivated students with a degree (5-year master or engineering degree obtained or to be obtained in the academic year 2026-2027) in fluid mechanics, (aero)acoustics, physics or applied mathematics can apply online: (...)

- Thesis scholarships

PhD proposal: Hybrid RANS/LES approach with specific meshes for fluctuations and the mean field

De-Marchi Olivier — 2026-03-03T14:37:42Z

Project description
Computational fluid dynamics is a key tool for engineering, but existing methods for simulating turbulence have limitations : RANS methods lack accuracy, while LES methods, although more accurate, remain too resource-intensive for routine use in design offices. To overcome this challenge, the thesis proposes an innovative approach : a hybrid RANS/LES method with dual meshing in which only fluctuations are resolved using LES. This method combines the advantages of both (...)

- Thesis scholarships