17 papers
Dynamical hysteresis in the dissipation in turbulent flows
M. Ahmad, P. D. Mininni, M. Obligado +1
We present evidence of the dynamical hysteretic nature of dissipation in unsteady turbulent flows. Wind tunnel experiments and direct numerical simulations in oscillating flows sho…
Scaling laws and local enhancements of buoyancy flux in stratified turbulent flows
Gyeongseob Song, Fabio Feraco, Raffaele Marino +6
In the presence of stratification, turbulent flows exhibit intermittency not only at small scales but also at large scales, comparable to the mean flow, as observed in the atmosphe…
Topological transitions in swarmalators systems
Patrick Louodop, Michael N. Jipdi, Gael R. Simo +6
After its development, the swarmalators model attracted a great deal of attention since it was found to be very suitable to reproduce several behaviors in collective dynamics. Howe…
Helicity subgrid-scale models and their numerical validation
Nobumitsu Yokoi, Pablo D. Mininni, Annick Pouquet +2
Large-eddy simulations (LES) with an appropriate subgrid-scale (SGS) model provide a powerful tool for investigating real-world turbulence. The Smagorinsky model, one of the simple…
Chirality tomography: measuring local helicity from trajectory linking
Manuel Noseda, Bernardo Luciano Español, Pablo Daniel Mininni +1
We present the first three-dimensional helicity maps of fully developed turbulence obtained through chirality tomography, a Lagrangian voxel-based method that reconstructs helicity…
Non-equilibrium formulation for inertial particles in turbulent swirling flows
Bernardo L. Español, Martin Obligado, Joachim Peinke +3
We study the dynamics of inertial particles in turbulence using datasets obtained from both direct numerical simulations and laboratory experiments of turbulent swirling flows. By…