41 citations · 141 across the 28 of their papers we have counts for
6 papers · 2 filters
Is Vorticity Amplification Essential for Anomalous Dissipation and Intermittency in Turbulence?
Alessandro Chiarini
The distinct dynamical roles of vorticity amplification (VA) and vortex tilting (VT) in three-dimensional homogeneous isotropic turbulence are investigated using direct numerical s…
Imperfect bifurcations in a laminar 3D bluff body wake: effect of pitch and yaw
Atharva Lagwankar, Alessandro Chiarini, François Gallaire +1
We study the effect of pitch and yaw on the bifurcations of the laminar flow past an Ahmed body, a bluff body of width-to-height ratio and length-to-height ratio .…
Handling geometric singularities efficiently with the immersed-boundary method: application to riblets
Stefano Cipelli, Alessandro Chiarini, Maurizio Quadrio +2
We present an enhancement of classical immersed boundary methods for the direct numerical simulation of the incompressible Navier-Stokes equations, designed to efficiently cope wit…
Energy transfer and scale organisation in dense canopy turbulence
Riccardo Bertoncello, Alessandro Chiarini, Giulio Foggi Rota +2
This study identifies the scale-dependent processes that sustain turbulence in dense submerged canopy flows. Using a scale-resolved energy budget, we determine where in space and a…
On the optimal period of spanwise wall forcing for turbulent drag reduction
Maurizio Quadrio, Federica Gattere, Marco Castelletti +1
Turbulent channel flow controlled by spanwise wall oscillations is studied using direct numerical simulations to improve how spanwise forcing reduces skin-friction drag. Harmonic w…
Beyond Stokes drift -- Lagrangian transport in evolving gravity waves
Tatsuo Izawa, Giulio Foggi Rota, Alessandro Chiarini +1
Finite-amplitude gravity waves at the air-water interface induce net fluid and particle transport, known as Stokes drift. While this mechanism is well understood for steady waves,…