Multifractal statistics of Lagrangian velocity and acceleration in turbulence

Tijdschriftartikel

Biferale, L., Boffetta, G., Celani, A., Devenish, B.J., Lanotte, A. & Toschi, F. (2004). Multifractal statistics of Lagrangian velocity and acceleration in turbulence. Physical Review Letters, 93(6):064502 In Scopus Cited 147 times.

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Abstract

 

The statistical properties of velocity and acceleration fields along the trajectories of fluid particles transported by a fully developed turbulent flow are investigated by means of high resolution direct numerical simulations. We present results for Lagrangian velocity structure functions, the acceleration probability density function, and the acceleration variance conditioned on the instantaneous velocity. These are compared with predictions of the multifractal formalism, and its merits and limitations are discussed.