Physical mechanism and model of turbulent cascades in a barotropic atmosphere

被引：2
|
作者：
Feng Huang
Shikuo Liu
机构：
[1] Peking University,School of Physics
来源：
Advances in Atmospheric Sciences | 2004年 / 21卷
关键词：
physical mechanism; cascade model; turbulence; barotropic atmosphere;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In a barotropic atmosphere, new Reynolds mean momentum equations including turbulent viscosity, dispersion, and instability are used not only to derive the KdV-Burgers-Kuramoto equation but also to analyze the physical mechanism of the cascades of energy and enstrophy. It shows that it is the effects of dispersion and instability that result in the inverse cascade. Then based on the conservation laws of the energy and enstrophy, a cascade model is put forward and the processes of the cascades are described.
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页码：34 / 40
页数：6
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