Open AccessZonal flow dynamics in background of ion-temperature-gradient mode turbulence based on minimal freedom model
Author(s) -
Lu He-Lin,
Shun-Jin Wang
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.354
Subject(s) - turbulence , physics , instability , energy cascade , mechanics , zonal flow (plasma) , cascade , flow (mathematics) , reynolds stress , mode (computer interface) , k epsilon turbulence model , reynolds number , degrees of freedom (physics and chemistry) , dynamics (music) , temperature gradient , k omega turbulence model , ion , classical mechanics , statistical physics , thermodynamics , plasma , meteorology , tokamak , chemistry , quantum mechanics , computer science , chromatography , acoustics , operating system
In the ITG (ion-temperature-gradient) mode turbulence background, the dynamics of zonal flow generation is studied based on the minimal freedom model. We study the dynamical instability and present detailed numerical results. The energy cascade process in the ITG mode turbulence and the relationship between Reynolds stress and zonal flow are also discussed. The mechanism of turbulence suppression by zonal flow is clearly explored and displayed.