310 citations · 7.5k across the 291 of their papers we have counts for
6 papers · 2 filters
Drag Reduction by Microbubbles in Turbulent Flows: the Limit of Minute Bubbles
Victor S. L'vov, Anna Pomyalov, Itamar Procaccia +1
Drag reduction by microbubbles is a promising engineering method for improving ship performance. A fundamental theory of the phenomenon is lacking however, making actual design qui…
Maximum Drag Reduction Asymptotes and the Cross-Over to the Newtonian Plug
R. Benzi, E. De Angelis, I. Procaccia +2
We employ the full FENE-P model of hydrodynamics of a dilute polymer solutions to derive a theoretical approach to drag reduction in wall bounded turbulence. We recapture the resul…
The Polymer Stress Tensor in Turbulent Shear Flows
Victor S. L'vov, Anna Pomyalov, Itamar Procaccia +1
The interaction of polymers with turbulent shear flows is examined. We focus on the structure of the elastic stress tensor, which is proportional to the polymer conformation tensor…
Anisotropy in Turbulent Flows and in Turbulent Transport
Luca Biferale, Itamar Procaccia
We discuss the problem of anisotropy and intermittency in statistical theory of high Reynolds-number turbulence (and turbulent transport). We present a detailed description of the…
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…
Drag Reduction by a Linear Viscosity Profile
Elisabetta De Angelis, Carlo Casciola, Victor S. L'vov +3
Drag reduction by polymers in turbulent flows raises an apparent contradiction: the stretching of the polymers must increase the viscosity, so why is the drag reduced? A recent the…