Coherent structure of zonal flow and onset of turbulent transport

K. Itoh, K. Hallatschek, S. I. Itoh, P. H. Diamond, S. Toda

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

Excitation of the turbulence in the range of drift wave frequency and zonal flow in magnetized plasmas is analyzed. Nonlinear stabilization effect on zonal flow drive is introduced, and the steady state solution is obtained. The condition for the onset of turbulent transport is obtained and partition ratio of fluctuation energy into turbulence and zonal flows is derived. The turbulent transport coefficient, which includes the effect of zonal flow, is also obtained. Analytic result and direct numerical simulation show a good agreement.

Original languageEnglish
Article number062303
Pages (from-to)1-14
Number of pages14
JournalPhysics of Plasmas
Volume12
Issue number6
DOIs
Publication statusPublished - 2005

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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