Turbulence Dynamics with the Coupling of Density Gradient and Parallel Velocity Gradient in the Edge Plasmas

Y. Kosuga, S. I. Itoh, K. Itoh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Theory of parallel shear flow driven instability (PSFI) and its impact on turbulence dynamics and transport are presented. The mode is linearly unstable when the parallel flow shear exceeds a critical value. The quasilinear particle flux contains both outward and inward components. Nonlinear dynamics is formulated in terms of hydrodynamic helicity balance. The result implies that once excited, PSFI with helicity may spread from the excited region to stable regions. Implication for turbulence in scrape off layer plasmas is discussed. (

Original languageEnglish
Pages (from-to)511-515
Number of pages5
JournalContributions to Plasma Physics
Volume56
Issue number6-8
DOIs
Publication statusPublished - Aug 1 2016

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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