492 citations · 9.4k across the 216 of their papers we have counts for
20 papers · 1 filter
An exit-time approach to -entropy
M. Abel, L. Biferale, M. Cencini +3
An efficient approach to the calculation of the -entropy is proposed. The method is based on the idea of looking at the information content of a string of data, by analyzing the…
Nonperturbative Spectrum of Anomalous Scaling Exponents in the Anisotropic Sectors of Passively Advected Magnetic Fields
I. Arad, L. Biferale, I. Procaccia
We address the scaling behavior of the covariance of the magnetic field in the three-dimensional kinematic dynamo problem when the boundary conditions and/or the external forcing a…
Exit time of turbulent signals: a way to detect the intermediate dissipative range
L. Biferale, M. Cencini, D. Vergni +1
The exit time statistics of experimental turbulent data is analyzed. By looking at the exit-time moments (Inverse Structure Functions) it is possible to have a direct measurement o…
Disentangling Scaling Properties in Anisotropic and Inhomogeneous Turbulence
I. Arad, L. Biferale, I. Mazzitelli +1
We address scaling in inhomogeneous and anisotropic turbulent flows by decomposing structure functions into their irreducible representation of the SO(3) symmetry group which are d…
Multiscale velocity correlation in turbulence: experiments, numerical simulations, synthetic signals
R. Benzi, L. Biferale, G. Ruiz-Chavarria +2
Multiscale correlation functions in high Reynolds number experimental turbulence, numerical simulations and synthetic signals are investigated. Fusion Rules predictions as they ari…
Multi-time, multi-scale correlation functions in turbulence and in turbulent models
L. Biferale, G. Boffetta, A. Celani +1
A multifractal-like representation for multi-time multi-scale velocity correlation in turbulence and dynamical turbulent models is proposed. The importance of subleading contributi…
Helicity advection in Turbulent Models
L. Biferale, D. Pierotti, F. Toschi
Helicity transfer in a shell model of turbulence is investigated. In particular, we study the scaling behavior of helicity transfer in a dynamical model of turbulence lacking inver…
Intermittency and eddy-viscosities in dynamical models of turbulence
R. Benzi, L. Biferale, S. Succi +1
The dependence of intermittent inertial properties on ultraviolet eddy viscosity closures is examined within the framework of shell-models of turbulent flows. Inertial intermittent…
Multiscale velocity correlations in turbulence
R. Benzi, L. Biferale, F. Toschi
Multiscale correlation functions in high Reynolds number experimental turbulence and synthetic signals are investigated. Fusion Rules predictions as they arise from multiplicative,…
Mimicking a turbulent signal: sequential multiaffine processes
L. Biferale, G. Boffetta, A. Celani +2
An efficient method for the construction of a multiaffine process, with prescribed scaling exponents, is presented. At variance with the previous proposals, this method is sequenti…
Time-reversible Dynamical Systems for Turbulence
L. Biferale, D. Pierotti, A. Vulpiani
Dynamical Ensemble Equivalence between hydrodynamic dissipative equations and suitable time-reversible dynamical systems has been investigated in a class of dynamical systems for t…
Helicity Transfer in Turbulent Models
L. Biferale, D. Pierotti, F. Toschi
Helicity transfer in a shell model of turbulence is investigated. We show that a Reynolds-independent helicity flux is present in the model when the large scale forcing breaks inve…
Ultrametric structure of multiscale energy correlations in turbulent models
R. Benzi, L. Biferale, E. Trovatore
Ultrametric structure of the energy cascade process in a dynamical model of turbulence is studied. The tree model we use can be viewed as an approximated one-dimensional truncation…
Analytic calculation of anomalous scaling in random shell models for a passive scalar
R. Benzi, L. Biferale, A. Wirth
An exact non-perturbative calculation of the fourth-order anomalous correction to the scaling behaviour of a random shell-model for passive scalars is presented. Importance of ultr…
(1+1)-dimensional turbulence
R. Benzi, L. Biferale, R. Tripiccione +1
A class of dynamical models of turbulence living on a one-dimensional dyadic-tree structure is introduced and studied. The models are obtained as a natural generalization of the po…
Anomalous scaling in random shell models for passive scalars
A. Wirth, L. Biferale
A shell-model version of Kraichnan's (1994 {\it Phys. Rev. Lett. \bf 72}, 1016) passive scalar problem is introduced which is inspired from the model of Jensen, Paladin and Vulpian…
Helical shell models for three dimensional turbulence
R. Benzi, L. Biferale, E. Trovatore
In this paper we study a new class of shell models, defined in terms of two complex dynamical variables per shell, transporting positive and negative helicity respectively. The dyn…
Generalized scaling in fully developed turbulence
R. Benzi, L. Biferale, S. Ciliberto +2
In this paper we report numerical and experimental results on the scaling properties of the velocity turbulent fields in several flows. The limits of a new form of scaling, named E…
On the intermittent energy transfer at viscous scales in turbulent flows
R. Benzi, L. Biferale, S. Ciliberto +2
In this letter we present numerical and experimental results on the scaling properties of velocity turbulent fields in the range of scales where viscous effects are acting. A gener…
Transition to Chaos in a Shell Model of Turbulence
L. Biferale, A. Lambert, R. Lima +1
We study a shell model for the energy cascade in three dimensional turbulence at varying the coefficients of the non-linear terms in such a way that the fundamental symmetries of N…