Nonlinear Sciences – Chaotic Dynamics
Scientific paper
2007-08-02
Phys. Fluids 20, 065103 (2008)
Nonlinear Sciences
Chaotic Dynamics
13 RevTeX pages (2 columns) + 8 figures included
Scientific paper
10.1063/1.2930672
A detailed comparison between data from experimental measurements and numerical simulations of Lagrangian velocity structure functions in turbulence is presented. By integrating information from experiments and numerics, a quantitative understanding of the velocity scaling properties over a wide range of time scales and Reynolds numbers is achieved. The local scaling properties of the Lagrangian velocity increments for the experimental and numerical data are in good quantitative agreement for all time lags. The degree of intermittency changes when measured close to the Kolmogorov time scales or at larger time lags. This study resolves apparent disagreements between experiment and numerics.
Biferale Luca
Bodenschatz Eberhard
Cencini Massimo
Lanotte Alessandra S.
Ouellette Nicholas T.
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