18 citations · 18 across the 1 of their papers we have counts for
5 papers
Comparison of Theory and Direct Numerical Simulations of Drag Reduction by Rodlike Polymers in Turbulent Channel Flows
Roberto Benzi, Emily S. C. Ching, Elisabetta De Angelis +1
Numerical simulations of turbulent channel flows, with or without additives, are limited in the extent of the Reynolds number \Re and Deborah number \De. The comparison of such sim…
Identification and Calculation of the Universal Maximum Drag Reduction Asymptote by Polymers in Wall Bounded Turbulence
Roberto Benzi, Elisabetta deAngelis, Victor S. L'vov +1
Drag reduction by polymers in wall turbulence is bounded from above by a universal maximal drag reduction (MDR) velocity profile that is a log-law, estimated experimentally by Virk…
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…
Shell Model for Drag Reduction with Polymer Additive in Homogeneous Turbulence
Roberto Benzi, Elisabetta De Angelis, Rama Govindarajan +1
Recent direct numerical simulations of the FENE-P model of non-Newtonian hydrodynamics revealed that the phenomenon of drag reduction by polymer additives exists (albeit in reduced…
Drag Reduction by Polymers in Turbulent Channel Flows: Energy Redistribution Between Invariant Empirical Modes
Elisabetta De Angelis, Carlo M. Casciola, Victor S. L'vov +2
We address the phenomenon of drag reduction by dilute polymeric additive to turbulent flows, using Direct Numerical Simulations (DNS) of the FENE-P model of viscoelastic flows. It…