Measured effects of polymer additives on turbulent-velocity fluctuations at various length scales

P Tong, WI Goldburg, JS Huang - Physical Review A, 1992 - APS
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 …

Anisotropy in turbulent drag reduction

P Tong, WI Goldburg, JS Huang, TA Witten - Physical review letters, 1990 - APS
We have studied turbulent drag reduction using the technique of photon-correlation
homodyne spectroscopy to measure turbulent velocity gradients in a dilute polymer solution …

The structure of turbulence in a dilute polymer solution

PHJ Van Dam, GH Wegdam… - Journal of non-newtonian …, 1994 - Elsevier
The structure of turbulence is studied and quantified in terms of the higher order moments of
the distribution of the velocity differences in the system. These moments are experimentally …

Distribution of turbulent velocity fluctuations in a drag-reducing solution

PHJ Van Dam, GH Wegdam - The Journal of Physical Chemistry, 1994 - ACS Publications
The probability density function of the velocity fluctuations in turbulent pipe flow is directly
obtained from the measured velocity-velocity correlation function by calculating the higher …

Two-dimensional turbulence of dilute polymer solutions

G Boffetta, A Celani, S Musacchio - Physical review letters, 2003 - APS
We investigate theoretically and numerically the effect of polymer additives on two-
dimensional turbulence by means of a viscoelastic model. We provide compelling evidence …

Direct numerical simulations of statistically steady, homogeneous, isotropic fluid turbulence with polymer additives

P Perlekar, D Mitra, R Pandit - Physical Review E—Statistical, Nonlinear, and …, 2010 - APS
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 …

Elastic energy flux by flexible polymers in fluid turbulence

HD Xi, E Bodenschatz, H Xu - Physical review letters, 2013 - APS
We present a study of the energy transfer in the bulk of a turbulent flow with dilute long-chain
polymer additives. Based on prior work by Tabor and de Gennes [Europhys. Lett. 2, 519 …

Fluid acceleration in the bulk of turbulent dilute polymer solutions

AM Crawford, N Mordant, H Xu… - New Journal of …, 2008 - iopscience.iop.org
We studied the effects of long-chain polymers on the small scales of turbulence by
experimental measurements of Lagrangian accelerations in the bulk of turbulent flows of …

Retardation of the onset of turbulence by minor viscosity contrasts

R Govindarajan, VS L'vov, I Procaccia - Physical review letters, 2001 - APS
Motivated by turbulent drag reduction by minute concentrations of polymers we study the
effects of minor viscosity contrasts on the stability of hydrodynamic flows. The key player is a …

On the mechanism of turbulent drag reduction in dilute polymer solutions: dynamics of vortex filaments

AL Yarin - Journal of non-newtonian fluid mechanics, 1997 - Elsevier
The localized-induction approximation (LIA) is generalized in the framework of the quasi-
one-dimensional approach to include the effect of polymer additives on stretching of thin …