Zonal flow generation in parallel flow shear driven turbulence

Y. Kosuga, S. I. Itoh, K. Itoh

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Generation of zonal flow in parallel flow shear driven turbulence is discussed. Nonlinear dynamics is formulated by calculating energy transfer in the wave number space. It is shown that zonal flows can be generated (gain energy) from the primary mode which is driven by parallel flow shear. As a result, helical flow pattern can develop in turbulent plasmas. Our results imply that zonal flow can be generated in 3D parallel flow shear driven turbulence, which indicates that zonal flows are ubiquitous in turbulent plasmas, either 2D or 3D. Implications for turbulent momentum transport in laboratory and astrophysical plasmas are discussed.

Original languageEnglish
Article number032304
JournalPhysics of Plasmas
Issue number3
Publication statusPublished - Mar 1 2017

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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