Energy and enstrophy fluxes in the double cascade of two-dimensional turbulence

被引：88
|
作者：
Boffetta, G.
机构：
[1] Univ Turin, Dipartmento Fis Generale, I-10125 Turin, Italy
[2] Univ Turin, Ist Nazl Fis Nucl, I-10125 Turin, Italy
[3] CNR, ISAC, Sez Torino, I-10133 Turin, Italy
来源：
JOURNAL OF FLUID MECHANICS | 2007年 / 589卷
关键词：
D O I：
10.1017/S0022112007008014
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
High-resolution direct numerical simulations of two-dimensional turbulence in stationary conditions are presented. The development of an energy-enstrophy double cascade is investigated and its statistics found to be compatible with the classical Kraichnan theory in the limit of extended inertial ranges. The analysis of the joint distribution of energy and enstrophy fluxes in physical space reveals a small value of cross-correlation. This result supports many experimental and numerical studies where only one cascade is generated.
引用
收藏
页码：253 / 260
页数：8
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