Drag Reduction by Polymer Additives in Decaying Turbulence
Statistical Mechanics
2009-11-10 v2 Chaotic Dynamics
Fluid Dynamics
Abstract
We present results from a systematic numerical study of decaying turbulence in a dilute polymer solution by using a shell-model version of the FENE-P equations. Our study leads to an appealing definition of drag reduction for the case of decaying turbulence. We exhibit several new results, such as the potential-energy spectrum of the polymer, hitherto unobserved features in the temporal evolution of the kinetic-energy spectrum, and characterize intermittency in such systems. We compare our results with the GOY shell model for fluid turbulence.
Keywords
Cite
@article{arxiv.cond-mat/0411080,
title = {Drag Reduction by Polymer Additives in Decaying Turbulence},
author = {Chirag Kalelkar and Rama Govindarajan and Rahul Pandit},
journal= {arXiv preprint arXiv:cond-mat/0411080},
year = {2009}
}
Comments
4 pages RevTex4, 7 figures, accepted for publication in Physical Review E