On the small-scale statistics of Lagrangian turbulence

被引：60
|
作者：
Beck, C
机构：
[1] Univ Cambridge, Isaac Newton Inst Math Sci, Cambridge CB3 0EH, England
[2] Univ London Queen Mary & Westfield Coll, Sch Math Sci, London E1 4NS, England
来源：
PHYSICS LETTERS A | 2001年 / 287卷 / 3-4期
关键词：
D O I：
10.1016/S0375-9601(01)00483-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We provide evidence that the small-scale statistics of the acceleration of a test particle in high-Reynolds number Lagrangian turbulence is correctly described by Tsallis statistics, with entropic index q = 3/2. We present theoretical arguments why Tsallis statistics can naturally arise in Lagrangian turbulence and why at the smallest scales q = 3/2 is relevant. A generalized Heisenberg-Yaglom formula is derived from the nonextensive model. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：240 / 244
页数：5
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