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Drag Reduction by Polymer Additives in Decaying Turbulence

Chirag Kalelkar·Rama Govindarajan·Rahul Pandit
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Abstract

We present results from a systematic numerical study of decaying turbulence in a dilute polymer solution by using a shell-model version of the FENE-P equations. Our study leads to an appealing definition of 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 GOY shell model for fluid turbulence.

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BibTeXRIS

Chirag Kalelkar, Rama Govindarajan, Rahul Pandit. 2005-05-12. Drag Reduction by Polymer Additives in Decaying Turbulence. https://doi.org/10.1103/physreve.72.017301

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