title: Lagrangian statistics and temporal intermittency in a shell model of turbulence.
abstract: We study the statistics of single-particle Lagrangian velocity in a shell model of turbulence. We show that the small-scale velocity fluctuations are intermittent, with scaling exponents connected to the Eulerian structure function scaling exponents. The observed reduced scaling range is interpreted as a manifestation of the intermediate dissipative range, as it disappears in a Gaussian model of turbulence.
authors.affiliation: Dipartimento di Fisica Generale and INFM, Università di Torino, Via Pietro Giuria 1, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Boffetta
authors.forename: F
authors.initials: F
authors.lastname: De Lillo
authors.forename: S
authors.initials: S
authors.lastname: Musacchio