Drag Reduction by Polymer Additives in Decaying Turbulence
arXiv:cond-mat/0411080 · doi:10.1103/PhysRevE.72.017301
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.
4 pages RevTex4, 7 figures, accepted for publication in Physical Review E