Received 27 April 2012; revised 21 September 2012; published 5 October 2012 Simulations of maximum drag reduction (MDR) in channel flow using constitutive equations for suspensions of noninteracting rods predict a few-fold larger turbulent kinetic energy than in experiments using rodlike polymers. These differences are attributed to the neglect of interactions between polymers in the simulations. Despite these inconsistencies the simulations correctly reproduce the essential features of MDR, with universal profiles of the mean flow and the shear stress budgets that do not depend on the polymer concentration.
|Number of pages||6|
|Journal||Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)|
|Publication status||Published - 2012|