Impact of large scale flows on turbulent transport

  title={Impact of large scale flows on turbulent transport},
  author={Y. Sarazin and V. Grandgirard and G. Dif-Pradalier and E. Fleurence and X. Garbet and P. Ghendrih and P. Bertrand and N. Besse and N. Crouseilles and E. Sonnendr{\"u}cker and G. Latu and E. Violard},
  journal={Plasma Physics and Controlled Fusion},
The impact of large scale flows on turbulent transport in magnetized plasmas is explored by means of various kinetic models. Zonal flows are found to lead to a non-linear upshift of turbulent transport in a 3D kinetic model for interchange turbulence. Such a transition is absent from fluid simulations, performed with the same numerical tool, which also predict a much larger transport. The discrepancy cannot be explained by zonal flows only, despite they being overdamped in fluids. Indeed, some… Expand

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