Multifractal statistics of Lagrangian velocity and acceleration in turbulence

被引：189

作者：

Biferale, L

Boffetta, G

Celani, A

Devenish, BJ

Lanotte, A

Toschi, F

机构：

[1] Univ Roma Tor Vergata, Dept Phys, I-00133 Rome, Italy

[2] Univ Turin, Dept Phys, I-10125 Turin, Italy

[3] Univ Turin, INFM, I-10125 Turin, Italy

[4] CNRS, INLN, F-06560 Valbonne, France

[5] CNR, ISAC, Sez Lecce, I-73100 Lecce, Italy

[6] CNR, Ist Applicaz Calcolo, I-00161 Rome, Italy

[7] CNR, ISAC, Sez Torino, I-10133 Turin, Italy

[8] Met Off, Exeter EX1 3PB, Devon, England

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.93.064502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：064502 / 1

页数：4

共 36 条

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ARIMITSU T, CONDMAT0301516

[2] The PDF of fluid particle acceleration in turbulent flow with underlying normal distribution of velocity fluctuations [J].