7 citations · 13 across the 6 of their papers we have counts for
6 papers · 1 filter
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…
A simple and efficient second-order immersed-boundary method for the incompressible Navier--Stokes equations
Paolo Luchini, Davide Gatti, Alessandro Chiarini +3
An immersed-boundary method for the incompressible Navier--Stokes equations is presented. It employs discrete forcing for a sharp discrimination of the solid-fluid interface, and a…
Turbulent skin-friction drag reduction via spanwise forcing at high Reynolds number
Davide Gatti, Maurizio Quadrio, Alessandro Chiarini +2
We address the Reynolds-number dependence of the turbulent skin-friction drag reduction induced by streamwise-travelling waves of spanwise wall oscillations. The study relies on di…
Turbulent drag reduction with streamwise travelling waves in the compressible regime
Federica Gattere, Massimo Zanolini, Davide Gatti +2
The ability of streamwise-travelling waves of spanwise velocity to reduce the turbulent skin friction drag is assessed in the compressible regime. Direct numerical simulations are…
Structure function tensor equations with triple decomposition
Federica Gattere, Alessandro Chiarini, Emanuele Gallorini +1
Exact budget equations are derived for the coherent and stochastic contributions to the second-order structure function tensor. They extend the anisotropic generalised Kolmogorov e…
Dimples for skin-friction drag reduction: status and perspectives
Federica Gattere, Alessandro Chiarini, Maurizio Quadrio
Dimples are small concavities imprinted on a flat surface, known to affect heat transfer and also flow separation and aerodynamic drag on bluff bodies when acting as a standard rou…