Phys. Rev. E 72, 017301 (2005) [4 pages]Drag reduction by polymer additives in decaying turbulenceSee Also: Erratum Received 3 November 2004; revised 30 March 2005; published 21 July 2005 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. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.72.017301
DOI:
10.1103/PhysRevE.72.017301
PACS:
47.27.Gs, 83.60.Yz
See AlsoErratum: Chirag Kalelkar, Rama Govindarajan, and Rahul Pandit, Erratum: Drag reduction by polymer additives in decaying turbulence [Phys. Rev. E 72, 017301 (2005)], Phys. Rev. E 83, 039903 (2011). |
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