Presentation

Laboratory FAST (Fluides, Automatique et Systèmes Thermiques) is a CNRS research laboratory (UMR 7608), associated with University Paris-Saclay.

Research areas

Head: H. Auradou

Focus on a project

Internal wave turbulence in stratified and rotating fluids

N. Lanchon, S. Boury, P.-P. Cortet

Collaboration : B. Gallet (CEA), S. Nazarenko (INPHYNI), G. Krstulovic (Lagrange)

The stratification in density of the fluid and the Earth rotation are two key ingredients in the dynamics of the oceans and atmosphere. They profoundly modify the turbulence by allowing the propagation of internal waves in the volume of the fluid. At FAST lab, we seek to describe the turbulent regimes where these internal waves dominate the flow. As part of the "Simons Collaboration on Wave Turbulence" (2019-2026), we achieved in 2020 the first experimental observation of a wave turbulence regime in a rotating fluid. We more recently published a theoretical work on the turbulence of internal gravity waves leading to solutions in line with oceanic observations. This type of model could make it possible to account on a physical basis for the dynamics of the small oceanic scales in climate models. We are currently working on achieving this regime in the laboratory to test the validity of the theoretical predictions.

V. Labarre, N. Lanchon, P.-P. Cortet, G. Krstulovic, S. Nazarenko, J. Fluid Mech. (2024) [PDF]

N. Lanchon, P.-P. Cortet, Phys. Rev. Lett. 131, 264001 (2023) [PDF]

N. Lanchon, D.O. Mora, E. Monsalve, P.-P. Cortet, Phys. Rev. Fluids 8, 054802 (2023) [PDF]

E. Monsalve, M. Brunet, B. Gallet, P.-P. Cortet, Phys. Rev. Lett. 125, 254502 (2020) [PDF]

Other experiments in this research area

Neil Ribe honoured by EGU

The EGU (European Geosciences Union) has awarded the Augustus Love Medal to our colleague Neil Ribe for his outstanding contributions to Earth sciences.

He will be celebrated during the EGU General Assembly 2025, which will be held from 27 April – 2 May in Vienna.