Confinement of turbulent flows with rotation effects with a penalization method
Résumé
We want to analyse the structuration and dynamics of homogeneous turbulence in a cylindrical container with open periodic ends, placed in a rotating frame. To that extent, we performed pseudo-spectral Direct Numerical Simulations at di erent Rossby and Reynolds numbers using a penalization technique to take into account the radial con nement. A rst part of the presentation is dedicated to the validation of this numerical method by considering the impact of a vortex ring on a at \penalized" wall and compare the results obtained with the existing experimental data. A second part will then describe the dynamics of the cylindrical ow as well as its anisotropic structure and its main Lagrangian statistics.
Origine : Fichiers produits par l'(les) auteur(s)
Loading...