paper

Universality in fully developed turbulence

arXiv:chao-dyn/9312001 · doi:10.1103/PhysRevE.50.2784

Abstract

We extend the numerical simulations of She et al. [Phys.\ Rev.\ Lett.\ 70, 3251 (1993)] of highly turbulent flow with Taylor-Reynolds number up to , employing a reduced wave vector set method (introduced earlier) to approximately solve the Navier-Stokes equation. First, also for these extremely high Reynolds numbers , the energy spectra as well as the higher moments -- when scaled by the spectral intensity at the wave number of peak dissipation -- can be described by {\it one universal} function of for all . Second, the ISR scaling exponents of this universal function are in agreement with the 1941 Kolmogorov theory (the better, the large is), as is the dependence of . Only around viscous damping leads to slight energy pileup in the spectra, as in the experimental data (bottleneck phenomenon).

14 pages, Latex, 5 figures (on request), 3 tables, submitted to Phys. Rev. E

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