Evolution of particle separation in slowly decorrelating velocity fields

Abstract

We consider the evolution of the separation distance between two particles advected by a random velocity field with slowly decaying temporal and spatial correlations in the weak coupling regime. It has been shown in [5] that the motion of a single particle converges to a fractional Brownian motion on a time scale δ−γ with some γ < 2, which is shorter than… (More)

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