The large-scale structure of passive scalar turbulence - Archive ouverte HAL
Article Dans Une Revue Physical Review Letters Année : 2005

The large-scale structure of passive scalar turbulence

Résumé

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.

Dates et versions

hal-00134295 , version 1 (01-03-2007)

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Antonio Celani, Agnese Seminara. The large-scale structure of passive scalar turbulence. Physical Review Letters, 2005, 94, pp.214503. ⟨hal-00134295⟩
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