Superdiffusion of massive particles induced by multi-scale flow
Mahmoodi Baram, R.1 Lind, P. 1, Andrade, J. 2 and Herrmann, H.3
1 Centro de Física Teórica e Computacional da Universidade de Lisboa, Portugal; 2 Federal University of Ceará, Brazil; 3 ETH Zürich, Switzerland
In this work, we study the statistics of diffusion of massive particles in scale-free velocity fields. We show that the key feature underlying superdiffusive nature of the transport of the particles is the multi-scale vortical structure. However, other mechanisms such as dissipation are needed to account for preferential concentration in the distribution of the particles.