Drag reduction by polymer additives in decaying turbulence

Kalelkar, Chirag ; Govindarajan, Rama ; Pandit, Rahul (2005) Drag reduction by polymer additives in decaying turbulence Physical Review E - Statistical, Nonlinear and Soft Matter Physics, 72 (1). 017301_1-017301_4. ISSN 1539-3755

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Official URL: http://pre.aps.org/abstract/PRE/v72/i1/e017301

Related URL: http://dx.doi.org/10.1103/PhysRevE.72.017301


We present results from a systematic numerical study of decaying turbulence in a dilute polymer solution by using a shell-model version of the finitely extensible nonlinear elastic and Peterlin equations. Our study leads to an appealing definition of the 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 Gledzer-Ohkitani-Yamada shell model for fluid turbulence.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:33505
Deposited On:30 Mar 2011 12:37
Last Modified:17 May 2016 16:21

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