Pair dispersion in turbulence

Abstract

We study the statistics of pair dispersion in two-dimensional turbulence. Direct numerical simulations show that the pdf of pair separations is in agreement with the Richardson prediction. The pdf of doubling times follows dimensional scaling and shows a long tail which is the signature of close approaches between particles initially seeded with a large separation. This phenomenon is related to the formation of fronts in passive scalar advection.

11 pages, 5 figures

References in corpus (1)

• Experimental evidence of chaotic advection in a convective flow

Cited by in corpus (12)

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• Turbulent Mass Inhomogeneities induced by a point-source
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