Lagrangian statistics and temporal intermittency in a shell model of turbulence

被引：39

作者：

Boffetta, G

De Lillo, F

Musacchio, S

机构：

[1] Univ Turin, Dipartimento Sci Gen, I-10125 Turin, Italy

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

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

来源：

PHYSICAL REVIEW E | 2002年 / 66卷 / 06期

关键词：

D O I：

10.1103/PhysRevE.66.066307

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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.

引用

页数：4

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