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Nonlinear stability of a zonal shear flow

 

作者: S.M. Churilov,   I.G. Shukhman,  

 

期刊: Geophysical & Astrophysical Fluid Dynamics  （Taylor Available online 1986）
卷期: Volume 36, issue 1  

页码: 31-52

 

ISSN:0309-1929

 

年代: 1986

 

DOI:10.1080/03091928608208796

 

出版商: Taylor & Francis Group

 

关键词: Nonlinear stability;shear flow;β-plane approximation

 

数据来源: Taylor

 

摘要:

At the short-wave boundary of the instability region, the nonlinearity plays a stabilizing role irrespective of the value of the parameter β, and this includes the region in which the neutral curve has a maximum (β=4.3−3/2for the flowu=tanhy). At the long-wave boundary, there exists a range of wave numbers for which the nonlinearity has a destabilizing effect.

 

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