Classical Kolmogorov scaling is inconsistent with local coupling
摘要
We consider cascade models of turbulence which are obtained by restricting the Navier-Stokes equation to local interactions. By combining the results of the method of extended self-similarity and a novel subgrid model, we investigate the inertial range fluctuations of the cascade. Significant corrections to the classical scaling exponents are found. The dynamics of our local Navier-Stokes models is described accurately by a simple set of Langevin equations proposed earlier as a model of turbulence [Phys. Rev. E {\bf 50}, 285 (1994)]. This allows for a prediction of the intermittency exponents without adjustable parameters. Excellent agreement with numerical simulations is found.
引用
@article{arxiv.chao-dyn/9607008,
title = {Classical Kolmogorov scaling is inconsistent with local coupling},
author = {C. Uhlig and J. Eggers},
journal= {arXiv preprint arXiv:chao-dyn/9607008},
year = {2008}
}
备注
41 pages(REVTeX), 15 included encapsulated Postscript figures, Stylefile here.sty, submitted to Phys. Fluids