109 citations · 1.3k across the 81 of their papers we have counts for
12 papers · 2 filters
Dynamics and fluid-structure interaction in turbulent flows within and above flexible canopies
Giulio Foggi Rota, Alessandro Monti, Stefano Olivieri +1
Flexible canopy flows are often encountered in natural scenarios, e.g., when crops sway in the wind or when submerged kelp forests are agitated by marine currents. Here, we provide…
Forced and natural dynamics of a clamped flexible fiber in wall turbulence
Giulio Foggi Rota, Morie Koseki, Riya Agrawal +2
We characterize the dynamical behavior of a clamped flexible fiber immersed in wall turbulence over a wide range of natural frequencies by means of direct numerical simulations. On…
Anisotropic mean flow enhancement and anomalous transport of finite-size spherical particles in turbulent flows
Alessandro Chiarini, Ianto Cannon, Marco Edoardo Rosti
We investigate the influence of dispersed solid spherical particles on the largest scales of the turbulent Arnold-Beltrami-Childress (ABC) flow. The ABC flow is an ideal instance o…
Spheres and fibres in turbulent flows at various Reynolds numbers
Ianto Cannon, Stefano Olivieri, Marco E. Rosti
We perform fully coupled numerical simulations using immersed boundary methods of finite-size spheres and fibres suspended in a turbulent flow for a range of Taylor Reynolds number…
A unified view of elastic and elasto-inertial turbulence in channel flows at low and moderate Reynolds numbers
Giulio Foggi Rota, Christian Amor, Soledad Le Clainche +1
The chaotic flow of elastic fluids at low Reynolds number (Re) is typically distinguished into elasto-inertial and elastic turbulence (EIT/ET). However, the clear separation among…
The interplay of inertia and elasticity in polymeric flows
Rahul K. Singh, Marco E. Rosti
Addition of polymers modifies a turbulent flow in a manner that depends non-trivially on the interplay of fluid inertia, quantified by the Reynolds number , and the elasticity…
Intermittency in the not-so-smooth elastic turbulence
Rahul K. Singh, Prasad Perlekar, Dhrubaditya Mitra +1
Elastic turbulence is the chaotic fluid motion resulting from elastic instabilities due to the addition of polymers in small concentrations at very small Reynolds ($\mbox{Re}$) num…
Morphology of clean and surfactant-laden droplets in homogeneous isotropic turbulence
Ianto Cannon, Giovanni Soligo, Marco E. Rosti
We perform direct numerical simulations of surfactant-laden droplets in homogeneous isotropic turbulence with Taylor Reynolds number of 180. The droplets are modelled using the vol…
On-off pumping for drag reduction in a turbulent channel flow
Giulio Foggi Rota, Alessandro Monti, Marco E. Rosti +1
We show that the energy required by a turbulent flow to displace a given amount of fluid through a straight duct in a given time interval can be reduced by modulating in time the p…
Collective dynamics of dense hairy surfaces in turbulent flow
Alessandro Monti, Stefano Olivieri, Marco E. Rosti
Flexible filamentous beds interacting with a turbulent flow represent a fundamental setting for many environmental phenomena, e.g., aquatic canopies in marine current. Exploiting d…
Saving Energy in Turbulent Flows with Unsteady Pumping
Giulio Foggi Rota, Alessandro Monti, Marco E. Rosti +1
Viscous dissipation causes significant energy losses in fluid flows; in ducts, laminar flows provide the minimum resistance to the motion, whereas turbulent currents substantially…
Enhanced axial migration of a deformable capsule in pulsatile channel flows
Naoki Takeishi, Marco Edoardo Rosti
We present numerical analysis of the lateral movement of a deformable spherical capsule in a pulsatile channel flow, with a Newtonian fluid in almost inertialess condition and at a…