Superdiffusion of massive particles induced by multi-scale velocity fields

Details Superdiffusion of massive particles induced by multi-scale velocity fields Superdiffusion of massive particles induced by multi-scale velocity fields

2009-07-20

arxiv.org/abs/0907.3444v2

Physics

Fluid Dynamics

5 pages, 5 figures. Accepted for publication in EPL

Scientific paper

We study drag-induced diffusion of massive particles in scale-free velocity fields, where superdiffusive behavior emerges due to the scale-free size distribution of the vortices of the underlying velocity field. The results show qualitative resemblance to what is observed in fluid systems, namely the diffusive exponent for the mean square separation of pairs of particles and the preferential concentration of the particles, both as a function of the response time.

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