Breaking the Kolmogorov Barrier – BANG
Viscous flows are ubiquitous in nature and displays vortices and coherent structures of various sizes. It is often thought that scales below the dissipative scale ? are irrelevant and do not even need to be considered by numerical simulations.
Recent theoretical and experimental progresses however suggest that many interesting phenomena do actually happen below ? and this may impact the validity of Navier-Stokes equations (NSE) as model for the dynamics of industrial, geophysical or astrophysical fluids. The project BANG explores the validity of the NSE as a fluid model by studying three phenomena (singularities, spontaneous stochasticity, thermal noise) occurring below the Kolmogorov scale using multi-scale tools and advanced visualization techniques (3D Particle Tracking Velocimetry -PTV- or Tomographic Particle Image Velocimetry -PIV-) in a dedicated large turbulent experiment.
Project coordination
Bérengère Dubrulle (Commissariat à l'énergie atomique et aux énergies alternatives)
The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.
Partner
SPEC Commissariat à l'énergie atomique et aux énergies alternatives
DTIS Office National d'Etudes et de Recherches Aerospatiales
Centrale Lille Institut
Help of the ANR 510,660 euros
Beginning and duration of the scientific project:
September 2022
- 48 Months
