We address the "additive equivalence" discovered by Virk and co-workers: 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.

Benzi, R., Ching, E., Lo, T., L'Vov, V., Procaccia, I. (2005). Additive equivalence in turbulent drag reduction by flexible and rodlike polymers. PHYSICAL REVIEW E, 72(1), 1-8 [10.1103/PhysRevE.72.016305].

Additive equivalence in turbulent drag reduction by flexible and rodlike polymers

BENZI, ROBERTO;
2005-01-01

Abstract

We address the "additive equivalence" discovered by Virk and co-workers: 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.
2005
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
English
Con Impact Factor ISI
Equations of motion; Turbulent flow; Macroscopic theory; Maximum drag reduction (MDR); Drag
Benzi, R., Ching, E., Lo, T., L'Vov, V., Procaccia, I. (2005). Additive equivalence in turbulent drag reduction by flexible and rodlike polymers. PHYSICAL REVIEW E, 72(1), 1-8 [10.1103/PhysRevE.72.016305].
Benzi, R; Ching, E; Lo, T; L'Vov, V; Procaccia, I
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/37945
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