F. Toschi

Publications430
h-index50
Citations8,770
Highly Influential Citations398
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Acceleration statistics of heavy particles in turbulence
We present the results of direct numerical simulations of heavy particle transport in homogeneous, isotropic, fully developed turbulence, up to resolution $512^3$ ($R_\lambda\approx 185$). Following…
Heavy particle concentration in turbulence at dissipative and inertial scales.
Spatial distributions of heavy particles suspended in an incompressible isotropic and homogeneous turbulent flow are investigated by means of high resolution direct numerical simulations. In the…
Lagrangian Properties of Particles in Turbulence
The Lagrangian description of turbulence is characterized by a unique conceptual simplicity and by an immediate connection with the physics of dispersion and mixing. In this article, we report some…
Shear-improved Smagorinsky model for large-eddy simulation of wall-bounded turbulent flows
A shear-improved Smagorinsky model is introduced based on results concerning mean-shear effects in wall-bounded turbulence. The Smagorinsky eddy-viscosity is modified as vT =(Csδ)2(|S|—|〈S〉|): the…
Intermittency in the velocity distribution of heavy particles in turbulence
The statistics of velocity differences between pairs of heavy inertial point particles suspended in an incompressible turbulent flow is studied and found to be extremely intermittent. The problem is…
Generalized lattice Boltzmann method with multirange pseudopotential.
TLDR
The theoretical foundations of the Shan-Chen methodology for the lattice Boltzmann method are clarified and its applicability and flexibility to the simulation of multiphase flows to density ratios up to O(100).
Rotation rate of rods in turbulent fluid flow.
TLDR
The first three-dimensional experimental measurements of the orientation dynamics of rodlike particles as they are advected in a turbulent fluid flow are reported.
Inverse energy cascade in three-dimensional isotropic turbulence.
TLDR
It is shown here that energy flux is always reversed when mirror symmetry is broken, leading to a distribution of helicity in the system with a well-defined sign at all wave numbers, showing that both 2D and 3D properties naturally coexist in all flows in nature.
Lagrangian statistics of particle pairs in homogeneous isotropic turbulence
We present a detailed investigation of the particle pair separation process in homogeneous isotropic turbulence. We use data from direct numerical simulations up to R280 following the evolution of…
Cloud Droplet Growth by Condensation in Homogeneous Isotropic Turbulence
The growth of cloud droplets by diffusion of water vapor in a three-dimensional homogeneous isotropic turbulent flow is considered. Within a simple model of advection and condensation, the dynamics…
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