The structures responsible for the inverse energy and the forward enstrophy cascades in two-dimensional turbulence

被引：10
|
作者：
Bruneau, C.-H.
Fischer, P.
Kellay, H.
机构：
[1] Univ Bordeaux 1, CNRS, UMR 5466, MAB,INRIA Projet MC2, F-33405 Talence, France
[2] Univ Bordeaux 1, CNRS, UMR 5798, CPMOH, F-33405 Talence, France
来源：
EPL | 2007年 / 78卷 / 03期
关键词：
D O I：
10.1209/0295-5075/78/34002
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Two-dimensional turbulence admits two different ranges: an inverse energy cascade at large scales and a cascade of enstrophy to the small scales. Here we show that two. ow structures govern the transfers of either enstrophy or energy. Vortical structures are responsible for the transfers of energy upscale while filamentary structures are responsible for the forward transfer of the enstrophy. Copyright (C) EPLA, 2007.
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页数：6
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