Current sheet formation in twodimensional incompressible MHD turbulence from a lagrangian point of view

I. Klapper, Michael Tabor

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Two dimensional ideal incompressible MHD turbulence is studied in a Lagrangian framework in which the non-local pressure forces are approximated to be locally isotropic. Within this model current sheet formation at null points and along field lines is observed. In the case of field lines, this behavior is found to be robust under addition of random pressure fluctuations from isotropy. The value of a quantity called the fluid balance of strain is found to be important in predicting where and when current sheet formation occurs.

Original languageEnglish (US)
Pages (from-to)109-122
Number of pages14
JournalGeophysical and Astrophysical Fluid Dynamics
Volume73
Issue number1-4
StatePublished - 1993

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current sheets
Magnetohydrodynamics
Turbulence
turbulence
isotropy
Fluids
fluid
fluids

Keywords

  • Current sheets
  • MHD turbulence

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics
  • Mechanics of Materials
  • Computational Mechanics
  • Astronomy and Astrophysics

Cite this

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AB - Two dimensional ideal incompressible MHD turbulence is studied in a Lagrangian framework in which the non-local pressure forces are approximated to be locally isotropic. Within this model current sheet formation at null points and along field lines is observed. In the case of field lines, this behavior is found to be robust under addition of random pressure fluctuations from isotropy. The value of a quantity called the fluid balance of strain is found to be important in predicting where and when current sheet formation occurs.

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