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Universality of anisotropic turbulence

✍ Scribed by L Biferale; E Calzavarini; A.S Lanotte; F Toschi; R Tripiccione

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 234 KB
Volume: 338
Category: Article
ISSN: 0378-4371
DOI: 10.1016/j.physa.2004.02.041

No coin nor oath required. For personal study only.

✦ Synopsis

We review some ideas about the physics of small-scale turbulent statistics, focusing on the scaling behavior of anisotropic uctuations. We present results from direct numerical simulations of three-dimensional homogeneous, anisotropically forced, turbulent systems: the Rayleigh-BÃ enard system, the random-Kolmogorov-ow, and a third ow with constant anisotropic energy spectrum at low wave numbers. A comparison of the anisotropic scaling properties displays good similarity among these very di erent ows. Our ÿndings support the conclusion that scaling exponents of anisotropic uctuations are universal, i.e., independent of the forcing mechanism sustaining turbulence.

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