Minimum enstrophy flows in drift wave turbulence with neutral particles

Y. Kosuga, D. Aoki

Research output: Contribution to journalArticlepeer-review

Abstract

It is shown that the quasi-2D nature of drift wave turbulence can be preserved in the presence of neutral particles. As a consequence, potential vorticity is conserved in the system and constraints the evolution of the system. The minimum enstrophy principle for 2D turbulence is applied to drift wave turbulence with neutral particle effects. The analysis predicts the formation of various vortex/flow structures, including large scale shear (zonal) flows. The resultant flow profile is calculated. The natural scales for the flow structure is given by Rhine's scale, with the neutral flow effect included. The result indicates that plasma flow shear can be controlled via neutral particles in the edge region.

Original languageEnglish
Article number105002
JournalPlasma Physics and Controlled Fusion
Volume62
Issue number10
DOIs
Publication statusPublished - Oct 2020

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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