89 citations · 292 across the 16 of their papers we have counts for
17 papers
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…
The effect of particle anisotropy on the modulation of turbulent flows
Stefano Olivieri, Ianto Cannon, Marco E. Rosti
We investigate the modulation of turbulence caused by the presence of finite-size dispersed particles. Bluff (isotropic) spheres vs slender (anisotropic) fibers are considered to u…
Transport and evaporation of virus-containing droplets exhaled by men and women in typical cough events
Stefano Olivieri, Mattia Cavaiola, Andrea Mazzino +1
The spreading of the virus-containing droplets exhaled during respiratory events, e.g., cough, is an issue of paramount importance for the prevention of many infections such as COV…
On the fully coupled dynamics of flexible fibres dispersed in modulated turbulence
Stefano Olivieri, Andrea Mazzino, Marco E. Rosti
The present work investigates the mechanical behaviour of finite-size, elastic and inertial fibres freely moving in a homogeneous and isotropic turbulent flow at moderate Reynolds…
Universal flapping states of elastic fibers in modulated turbulence
Stefano Olivieri, Andrea Mazzino, Marco E. Rosti
We study the fully-coupled dynamics between a fully-developed turbulent flow and an ensemble of immersed flexible fibers. We vary the concentration of the suspension, the mechanica…
Direct numerical simulation of flapping flags in grid-induced turbulence
Stefano Olivieri, Francesco Viola, Andrea Mazzino +1
A fully-resolved direct-numerical-simulation (DNS) approach for investigating flexible bodies forced by a turbulent incoming flow is designed to study the flapping motion of a flex…
Fiber Tracking Velocimetry for two-point statistics of turbulence
Stefano Brizzolara, Marco Edoardo Rosti, Stefano Olivieri +3
We propose and validate a novel experimental technique to measure two-point statistics of turbulent flows. It consists in spreading rigid fibers in the flow and tracking their posi…
Fluid dynamics of COVID-19 airborne infection suggests urgent data for a scientific design of social distancing
M. E. Rosti, S. Olivieri, M. Cavaiola +2
The COVID-19 pandemic is largely caused by airborne transmission, a phenomenon that rapidly gained the attention of the scientific community. Social distancing is of paramount impo…
Turbulence dictates the fate of virus-containing droplets in violent expiratory events
Marco E. Rosti, Mattia Cavaiola, Stefano Olivieri +2
Violent expiratory events, such as coughing and sneezing, are highly nontrivial examples of a two-phase mixture of liquid droplets dispersed into an unsteady turbulent airflow. Und…
Dispersed fibers change the classical energy budget of turbulence via nonlocal transfer
S. Olivieri, L. Brandt, M. E. Rosti +1
The back-reaction of dispersed rigid fibers to turbulence is analyzed by means of a state-of-the-art fully-coupled immersed boundary method. The following universal scenario is ide…
Turbulence in a network of rigid fibers
S. Olivieri, A. Akoush, L. Brandt +2
The effect of a network of fixed rigid fibers on fluid flow is investigated by means of three-dimensional direct numerical simulations using an immersed boundary method for the flu…
The assembly of freely moving rigid fibers measures the flow gradient tensor
M. Cavaiola, S. Olivieri, A. Mazzino
The motion of an assembly of rigid fibers is investigated for different classes of closed streamline flows, steady or time dependent, two dimensional or three dimensional. In our s…
Constructive interference in a network of elastically-bounded flapping plates
S. Olivieri, C. Boragno, R. Verzicco +1
Aeroelastic phenomena are gaining significant attention from the perspective of energy harvesting (EH) with promising applications in supplying low-power remote sensors. Besides th…
Flowing fibers as a proxy of turbulence statistics
Marco Edoardo Rosti, Stefano Olivieri, Arash A. Banaei +2
The flapping states of a flexible fiber fully coupled to a three-dimensional turbulent flow are investigated via state-of-the-art numerical methods. Two distinct flapping regimes a…
Generalization of Taylor's formula to particles of arbitrary inertia
S. Boi, A. Mazzino, P. Muratore-Ginanneschi +1
One of the cornerstones of turbulent dispersion is the celebrated Taylor formula. This formula expresses the rate of transport (i.e. the eddy diffusivity) of a tracer as a time int…
Passive control of a falling sphere by elliptic-shaped appendages
Uǧis Lācis, Stefano Olivieri, Andrea Mazzino +1
The majority of investigations characterizing the motion of single or multiple particles in fluid flows consider canonical body shapes, such as spheres, cylinders, discs, etc. Howe…
The effect of the Basset history force on particle clustering in Homogeneous and Isotropic Turbulence
Stefano Olivieri, Francesco Picano, Gaetano Sardina +2
We study the effect of the Basset history force on the dynamics of small particles transported in homogeneous and isotropic turbulence and show that this term, often neglected in p…