77th Annual Meeting of the APS Division of Fluid Dynamics (November 24, 2024 — November 26, 2024)

V2694947: Direct Numerical Simulations of fractal oscillating grid flows

Authors

• Valentin Musy, University of Mons
• Anne-Lise Hantson, Chemical and Biochemical Process Engineering Unit, Faculty of Engineering, University of Mons, 7000 Mons, Belgium
• Diane Thomas, Chemical and Biochemical Process Engineering Unit, Faculty of Engineering, University of Mons, 7000 Mons, Belgium
• Jean-Christophe Baudez, IMT Nord Europe
• Tom Lacassagne, IMT Nord Europe

DOI: https://doi.org/10.1103/APS.DFD.2024.GFM.V2694947

Oscillating grids were classically applied to generate almost isotropic and homogenious turbulence with a weak mean flow and have been studied almost entirely by experimental methods like Particle Image Velocimetry (PIV). On the other hand, fractal grids were used to generate downstream turbulence in wind and water tunnels and have been studied both experimentally and through numerical simulations. We propose here Direct Numerical Simulations of the flows generated by fractal oscillating grids in initally quiescent water.