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Scaling properties of subgrid-scale energy dissipation

Phys. Fluids 19, 058104 (2007); doi:10.1063/1.2735001

Published 18 May 2007

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Sergei G. Chumakov
Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87544
We use direct numerical simulation of forced homogeneous isotropic turbulence with 2563 and 5123 grid points and Reynolds number based on Taylor microscale up to 250 to examine a priori the scaling properties of the subgrid-scale kinetic energy and its dissipation rate. It is found that the two quantities are strongly correlated and a power-law scaling assumption holds reasonably well. However, the scaling exponent, which was assumed to be weakly varying in previous studies, is found to change considerably with the filter characteristic width. ©2007 American Institute of Physics
History: Received 7 February 2007; accepted 3 April 2007; published 18 May 2007
Permalink: http://link.aip.org/link/?PHFLE6/19/058104/1
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KEYWORDS and PACS

Keywords
PACS
  • 47.27.-i
    Turbulent flows, convection, and heat transfer
  • YEAR: 2007

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ISSN:
1070-6631 (print)   1089-7666 (online)
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REFERENCES (22)
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