Numerical Physical Mechanism and Model of Turbulent Cascades in a Barotropic Atmosphere

In a barotropic atmosphere， new Reynolds mean momentum equauons including turbulent viscosit,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 o...

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Bibliographic Details
Published in:Advances in atmospheric sciences 2004, Vol.21 (1), p.34-40
Main Author: 黄锋 刘式适
Format: Article
Language:English
Subjects:
大气压
数字模拟
物理机制
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Summary:In a barotropic atmosphere， new Reynolds mean momentum equauons including turbulent viscosit,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.
ISSN:0256-1530
1861-9533
DOI:10.1007/BF02915678