41 citations · 141 across the 28 of their papers we have counts for
31 papers
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,…