Physical Mechanism and Model of Turbulent Cascades in a Barotropic Atmosphere

HUANG Feng; LIU Shikuo

doi:10.1007/BF02915678

Impact Factor: 5.8

Volume 21 Issue 1

Jan. 2004

Article Contents

Article > ADVANCES IN ATMOSPHERIC SCIENCES > 2004 > 21(1): 34-40

Physical Mechanism and Model of Turbulent Cascades in a Barotropic Atmosphere

1.
School of Physics,Peking University,Beijing 100871,School of Physics,Peking University,Beijing 100871

doi: 10.1007/BF02915678

Abstract
References
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Abstract:
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.
- physical mechanism,cascade model,turbulence,barotropic atmosphere
References

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Manuscript History

Manuscript received: 10 January 2004

Manuscript revised: 10 January 2004

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Physical Mechanism and Model of Turbulent Cascades in a Barotropic Atmosphere

1. School of Physics,Peking University,Beijing 100871,School of Physics,Peking University,Beijing 100871

Manuscript received: 2004-01-10
Manuscript revised: 2004-01-10

Abstract: 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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