ITG sideband coupling models for zonal flows
Journal article, 2011

Four-wave interaction model between ITG mode and zonal flow was derived using fluid equations. In this model, the zonal flow is excited non-linearly by ITG turbulence via Reynolds stress. Numerical simulations show that the system allows for a small range above the ITG threshold where the zonal flow can stabilize an unstable ITG mode, effectively increasing eta(i) threshold, an effect which has been called the Dimits shift. However, the shift is smaller than in known cases such that in the Cyclone base.

Zonal flows

sideband

ITG

Author

Michal Stransky

Chalmers, Earth and Space Sciences, Transport Theory

Physics of Plasmas

1070-664X (ISSN) 1089-7674 (eISSN)

Vol. 18 5 052302- 052302

Driving Forces

Sustainable development

Areas of Advance

Energy

Roots

Basic sciences

Subject Categories

Fusion, Plasma and Space Physics

DOI

10.1063/1.3586796

More information

Created

10/7/2017