Large scale inhomogeneity of inertial particles in turbulent flows

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  • G. Boffetta
    Dipartimento di Fisica Generale and INFM, Università di Torino, via P. Giuria 1, 10125 Torino, Italy
  • F. De Lillo
    Dipartimento di Fisica Generale and INFM, Università di Torino, via P. Giuria 1, 10125 Torino, Italy
  • A. Gamba
    Dipartimento di Matematica, Politecnico di Torino, corso Duca degli Abruzzi 24, 10129 Torino, Italy

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<jats:p>Preferential concentration of inertial particles in turbulent flow is studied by high resolution direct numerical simulations of two-dimensional turbulence. The formation of network-like regions of high particle density, characterized by a length scale which depends on the Stokes number of inertial particles, is observed. At smaller scales, the size of empty regions appears to be distributed according to a universal scaling law.</jats:p>

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