Additive Equivalence in Turbulent Drag Reduction by Flexible and Rodlike Polymers
Chaotic Dynamics
2009-11-11 v1 Fluid Dynamics
Abstract
We address the "Additive Equivalence" discovered by Virk and coworkers: drag reduction affected by flexible and rigid rodlike polymers added to turbulent wall-bounded flows is limited from above by a very similar Maximum Drag Reduction (MDR) asymptote. Considering the equations of motion of rodlike polymers in wall-bounded turbulent ensembles, we show that although the microscopic mechanism of attaining the MDR is very different, the macroscopic theory is isomorphic, rationalizing the interesting experimental observations.
Keywords
Cite
@article{arxiv.nlin/0501027,
title = {Additive Equivalence in Turbulent Drag Reduction by Flexible and Rodlike Polymers},
author = {Roberto Benzi and Emily S. C. Ching and T. S. Lo and Victor S. L'vov and Itamar Procaccia},
journal= {arXiv preprint arXiv:nlin/0501027},
year = {2009}
}
Comments
8 pages, PRE, submitted