280 citations · 1.6k across the 31 of their papers we have counts for
33 papers
Assessment of heat transfer and Mach number effects on high-speed turbulent boundary layers
Michele Cogo, Umberto Baù, Mauro Chinappi +2
High-speed vehicles experience a highly challenging environment in which the free-stream Mach number and surface temperature greatly influence aerodynamic drag and heat transfer. T…
Shaping active matter from crystalline solids to active turbulence
Qianhong Yang, Maoqiang Jiang, Francesco Picano +1
Active matter drives its constituent agents to move autonomously by harnessing free energy, leading to diverse emergent states with relevance to both biological processes and inani…
Asymmetric invasion in anisotropic porous media
Dario Maggiolo, Francesco Picano, Federico Toschi
We report and discuss, by means of pore-scale numerical simulations, the possibility of achieving a directional-dependent two-phase flow behaviour during the process of invasion of…
Near-wall turbulence modulation by small inertial particles
Pedro Costa, Luca Brandt, Francesco Picano
We use interface-resolved simulations to study near-wall turbulence modulation by small inertial particles, much denser than the fluid, in dilute/semi-dilute conditions. We conside…
Suspensions of deformable particles in Poiseuille flows at finite inertia
Luigi Filippo Chiara, Marco Edoardo Rosti, Francesco Picano +1
We analyze a suspension of deformable particles in a pressure-driven flow. The suspension is composed of neutrally buoyant initially spherical particles and a Newtonian carrier flu…
Direct numerical simulation of an evaporating turbulent diluted jet-spray at moderate Reynolds number
Jietuo Wang, Federico Dalla Barba, Francesco Picano
The evaporation of dispersed, liquid droplets in jet-sprays occurs in several industrial applications and in natural phenomena. Despite the relevance of the problem, a satisfactory…
Regimes of heat transfer in particle suspensions
Ali Yousefi, Mehdi Niazi Ardekani, Francesco Picano +1
We present results of interface-resolved simulations of heat transfer in suspensions of finite-size neutrally-buoyant spherical particles for solid volume fractions up to 35% and b…
An interface capturing method for liquid-gas flows at low-Mach number
Federico Dalla Barba, Nicolò Scapin, Marco E. Rosti +2
Multiphase, compressible and viscous flows are of crucial importance in a wide range of scientific and engineering problems. Despite the large effort paid in the last decades to de…
Interface-resolved simulations of small inertial particles in turbulent channel flow
Pedro Costa, Luca Brandt, Francesco Picano
We present a direct comparison between interface-resolved and one-way-coupled point-particle direct numerical simulations (DNS) of gravity-free turbulent channel flow laden with sm…
The effect of polydispersity in a turbulent channel flow laden with finite-size particles
Walter Fornari, Francesco Picano, Luca Brandt
We study turbulent channel flows of monodisperse and polydisperse suspensions of finite-size spheres by means of Direct Numerical Simulations using an immersed boundary method to a…
Statistics of particle accumulation in spatially developing turbulent boundary layers
Gaetano Sardina, Francesco Picano, Philip Schlatter +2
We present the results of a Direct Numerical Simulation of a particle-laden spatially developing turbulent boundary layer up to Reθ = 2500. Two main features differentiate the beha…
Evaporation of dilute droplets in a turbulent jet: clustering and entrainment effects
Federico Dalla Barba, Francesco Picano
Droplet evaporation in turbulent sprays involves unsteady, multiscale and multiphase processes which make its comprehension and model capabilities still limited. The present work a…
Effects of the finite particle size in turbulent wall-bounded flows of dense suspensions
Pedro Costa, Francesco Picano, Luca Brandt +1
We use interface-resolved simulations to study finite-size effects in turbulent channel flow of neutrally-buoyant spheres. Two cases with particle sizes differing by a factor of 2,…
Curvature effects in turbulent premixed flames of H/Air: a DNS study with reduced chemistry
Gabriele Rocco, Francesco Battista, Francesco Picano +2
Data from a three-dimensional Direct Numerical Simulation of a turbulent premixed Bunsen flame at a low global Lewis number are analyzed to address the effects of the curvature on…
Fractal scaling of turbulent premixed flame fronts: application to LES
Francesco Battista, Guido Troiani, Francesco Picano
The fractal scaling properties of turbulent premixed flame fronts have been investigated and considered for modelling sub-grid scales in the Large-Eddy-Simulation framework. Since…
Turbulent channel flow of a dense binary mixture of rigid particles
Iman Lashgari, Francesco Picano, Pedro Costa +2
We study turbulent channel flow of a binary mixture of finite-size neutrally-buoyant rigid particles by means of interface-resolved direct numerical simulations. We fix the bulk Re…
Flow and dispersion in anisotropic porous media: a Lattice-Boltzmann study
Dario Maggiolo, Francesco Picano, Massimo Guarnieri
Given their capability of spreading active chemical species and collecting electricity, porous media made of carbon fibers are extensively used as diffusion layers in energy storag…
Reduced particle settling speed in turbulence
Walter Fornari, Francesco Picano, Gaetano Sardina +1
We study the settling of finite-size rigid spheres in sustained homogeneous isotropic turbulence (HIT) by direct numerical simulations using an immersed boundary method to account…
Universal Scaling Laws for Dense Particle Suspensions in Turbulent Wall-Bounded Flows
Pedro Costa, Francesco Picano, Luca Brandt +1
The macroscopic behavior of dense suspensions of neutrally-buoyant spheres in turbulent plane channel flow is examined. We show that particles larger than the smallest turbulence s…
The effect of particle density in turbulent channel flow laden with finite size particles in semi-dilute conditions
Walter Fornari, Alberto Formenti, Francesco Picano +1
We study the effect of varying the mass and volume fraction of a suspension of rigid spheres dispersed in a turbulent channel flow. We performed several Direct Numerical Simulation…
Rheology of confined non-Brownian suspensions
Walter Fornari, Luca Brandt, Pinaki Chaudhuri +3
We study the rheology of confined suspensions of neutrally buoyant rigid monodisperse spheres in plane-Couette flow using Direct Numerical Simulations. We find that if the width of…
Channel flow of rigid sphere suspensions: particle dynamics in the inertial regime
Iman Lashgari, Francesco Picano, Wim Paul Breugem +1
We consider suspensions of neutrally-buoyant finite-size rigid spherical particles in channel flow and investigate the relation between the particle dynamics and the mean bulk beha…
Sedimentation of finite-size spheres in quiescent and turbulent environments
Walter Fornari, Francesco Picano, Luca Brandt
Sedimentation of a dispersed solid phase is widely encountered in applications and environmental flows, yet little is known about the behavior of finite-size particles in homogeneo…
Transition and self-sustained turbulence in dilute suspensions of finite-size particles
Iman Lashgari, Francesco Picano, Luca Brandt
We study the transition to turbulence of channel flow of finite-size particle suspensions at low volume fraction, i.e. . The critical Reynolds number above which tu…