Lagrangian statistics and temporal intermittency in a shell model of turbulence.
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.
Boffetta
G
G
Dipartimento di Fisica Generale and INFM, Università di Torino, Via Pietro Giuria 1, Italy.
De Lillo
F
F
Musacchio
S
S