Are the energy and magnetic potential cascades direct or inverse in 2D MHD turbulence?

Eun Jin Kim, Béreng'ere Dubrulle

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Transfer of energy and magnetic potential is studied in 2D MHD turbulence in the presence of a background shear flow and magnetic field. The energy is injected into both fluid and magnetic field by external forcing. By using a two-scale analysis and the Gabor transform, the direction of the cascade of energy and magnetic vector potential is found to depend on the properties of forcings. In particular, in the case of a magnetic forcing that is isotropic, the magnetic vector potential cascades from small to large-scales whereas the energy from large to small-scales.

Original languageEnglish
Pages (from-to)213-227
Number of pages15
JournalPhysica D: Nonlinear Phenomena
Volume165
Issue number3-4
Early online date7 Apr 2002
DOIs
Publication statusPublished - 15 May 2002
Externally publishedYes

Keywords

  • Magnetohydrodynamics
  • Nonlinear dynamics
  • Stochastic processes and statistics

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics
  • Condensed Matter Physics
  • Applied Mathematics

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