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arxiv: chao-dyn/9506007 · v1 · pith:EUQIYKBJnew · submitted 1995-06-21 · chao-dyn · nlin.CD

Direct Numerical Simulation Tests of Eddy Viscosity in Two Dimensions

A. Chekhlov , S. A. Orszag (Program in Applied , Computational Mathematics , Princeton University) , S. Sukoriansky (Department of Mechanical Engineering , Ben-Gurion University of the Negev) , B. Galperin (Department of Marine Science , University of South Florida
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St. Petersburg) I. Staroselsky (Cambridge Hydrodynamics Inc. Princeton)
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classification chao-dyn nlin.CD
keywords calculateddirecteddynumericalsimulationtpevviscosityagreement
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Two-parametric eddy viscosity (TPEV) and other spectral characteristics of two-dimensional (2D) turbulence in the energy transfer sub-range are calculated from direct numerical simulation (DNS) with 512$^2$ resolution. The DNS-based TPEV is compared with those calculated from the test field model (TFM) and from the renormalization group (RG) theory. Very good agreement between all three results is observed.

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