Comparison of Theory and Direct Numerical Simulations of Drag Reduction by Rodlike Polymers in Turbulent Channel Flows
arXiv:0706.2413 · doi:10.1103/PhysRevE.77.046309
Abstract
Numerical simulations of turbulent channel flows, with or without additives, are limited in the extent of the Reynolds number \Re and Deborah number \De. The comparison of such simulations to theories of drag reduction, which are usually derived for asymptotically high \Re and \De, calls for some care. In this paper we present a study of drag reduction by rodlike polymers in a turbulent channel flow using direct numerical simulation and illustrate how these numerical results should be related to the recently developed theory.
References in corpus (2)
Cited by in corpus (6)
- Turbulent drag reduction by polymer additives: Fundamentals and recent advances
- Variable energy flux in turbulence
- Emergence of chaos in a viscous solution of rods
- Turbulent drag reduction in magnetohydrodynamic and quasi-static magnetohydrodynamic turbulence
- Enhancement of drag and mixing in a dilute solution of rodlike polymers at low Reynolds numbers
- Orientational order and topological defects in a dilute solutions of rodlike polymers at low Reynolds number