492 citations · 3.8k across the 96 of their papers we have counts for
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Dynamical scaling and intermittency in shell models of turbulence
R. Benzi, L. Biferale, M. Sbragaglia
We introduce a model for the turbulent energy cascade aimed at studying the effect of dynamical scaling on intermittency. In particular, we show that by slowing down the energy tra…
Flow reversal in a simple dynamical model of turbulence
Roberto Benzi
In this paper, we study a simple hydrodynamical model showing abrupt flow reversals at random times. For a suitable range of parameters, we show that the dynamics of flow reversal…
A lattice Boltzmann study of non-hydrodynamic effects in shell models of turbulence
R. Benzi, L. Biferale, M. Sbragaglia +2
A lattice Boltzmann scheme simulating the dynamics of shell models of turbulence is developed. The influence of high order kinetic modes (ghosts) on the dissipative properties of t…
Drag Reduction in Homogeneous Turbulence by Scale-Dependent Effective Viscosity
Roberto Benzi, Emily S. C. Ching, Itamar Procaccia
The phenomenon of drag reduction by polymer additives had been studied in simulations on the basis of non-Newtonian fluid mechanical models that take into account the field of poly…
Saturation of Turbulent Drag Reduction in Dilute Polymer Solutions
Roberto Benzi, Victor S. L'vov, Itamar Procaccia +1
Drag reduction by polymers in turbulent wall-bounded flows exhibits universal and non-universal aspects. The universal maximal mean velocity profile was explained in a recent theor…