We carry out a direct numerical simulation (DNS) study that reveals the effects of polymers
on statistically steady, forced, homogeneous, and isotropic fluid turbulence. We find clear …

The existence of drag reduction by polymer additives, well established for wall-bounded
turbulent flows, is controversial in homogeneous, isotropic turbulence. To settle this …

A minute amount of long-chain flexible polymer dissolved in a turbulent flow can drastically
change flow properties, such as reducing the drag and enhancing mixing. One fundamental …

We present results from a systematic numerical study of decaying turbulence in a dilute
polymer solution by using a shell-model version of the finitely extensible nonlinear elastic …

The effects of polymer additives on decaying isotropic turbulence are numerically
investigated using a hybrid approach consisting of Brownian dynamics simulations for an …

We investigate theoretically and numerically the effect of polymer additives on two-
dimensional turbulence by means of a viscoelastic model. We provide compelling evidence …

Turbulent-drag reduction in a dilute polymer solution has been studied using the technique
of photon-correlation homodyne spectroscopy to measure velocity differences in a …

By tracking small particles in the bulk of an intensely turbulent laboratory flow, we study the
effect of long-chain polymers on the Eulerian structure functions. We find that the structure …

Drag reduction by dilute polymer solutions is the most recognized phenomenon in wall-
bounded turbulent flows, which is associated with large scales (eg, velocity scales) in spite …

We carry out an extensive and high-resolution direct numerical simulation of homogeneous,
isotropic turbulence in two-dimensional fluid films with air-drag-induced friction and with …