Decay of scalar turbulence revisited

M. Chertkov, V. Lebedev

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

It is shown that scalar decay is accompanied by both upscale and downscale transport, however, the situation is asymmetric. The decay of scalar fluctuations in time is due to inertial interval physics, while the spatial correlations of the scalar at the smallest scales are mainly controlled by the viscous part of the flow. Advection of the scalar slows down in the boundary region, while mixing continues to be efficient in the bulk, far from the boundaries. The result is that the boundary region supplies the scalar into the bulk.

Original languageEnglish (US)
Article number034501
Pages (from-to)034501/1-034501/4
JournalPhysical review letters
Volume90
Issue number3
StatePublished - Jan 24 2003
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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