The large-scale structure of passive scalar turbulence

Details The large-scale structure of passive scalar turbulence The large-scale structure of passive scalar turbulence

2005-01-03

arxiv.org/abs/nlin/0501007v1

Nonlinear Sciences

Chaotic Dynamics

4 pages, 6 figures

Scientific paper

10.1103/PhysRevLett.94.214503

We investigate the large-scale statistics of a passive scalar transported by a turbulent velocity field. At scales larger than the characteristic lengthscale of scalar injection, yet smaller than the correlation length of the velocity, the advected field displays persistent long-range correlations due to the underlying turbulent velocity. These induce significant deviations from equilibrium statistics for high-order scalar correlations, despite the absence of scalar flux.

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