Influence of the mean flow on zonal flow generation

Lashkin, Volodymyr M.
December 2008
Physics of Plasmas;Dec2008, Vol. 15 Issue 12, p124502
Academic Journal
Excitation of zonal flow by the modulational instability in the presence of mean shear flow is considered. The presence of the mean flow without large amplitude increases the modulational instability growth rate and favors zonal flow generation, whereas sufficiently strong mean shear significantly reduces the instability growth rate.


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