Abstract
We report a non-perturbative study of the effect of different types of shear flows on the evolution of vorticity and particle density fluctuations in interchange turbulence. For the same shear strength, the transport of density is less reduced by streamers than by zonal flows, with zonal flows leading to oscillation death. In the inviscid limit, vorticity (density) grows (decays) as a power law due to the streamer or zonal flow and exponentially due to the combined effect of the zonal flow and streamer with the same sign of shear. The zonal flow and streamer with the opposite sign of shear lead to oscillation at multiple frequencies.
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