INVERSE ENERGY CASCADE IN ADVANCED MHD TURBULENCE (THE RNG METHOD)

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The nonlinear (in terms of the large-scale magnetic field) effect of the modification of the magnetic force by an advanced small-scale magnetohydrodynamic (MHD) turbulence is considered.
The phenomenon is due to the generation of magnetic fluctuations at the expense of hydrodynamic pulsations. It results in a decrease of the elasticity of the large-scale magnetic field.
The renormalization group (RNG) method was employed for the
investigation of the MHD turbulence at the large magnetic Reynolds number . It was found that the level of the magnetic fluctuations can exceed that obtained from the equipartition assumption due to the inverse energy cascade in advanced MHD turbulence. This effect can excite an instability of the large-scale magnetic field due to the energy transfer from the small-scale turbulent pulsations. This instability is an example of the inverse energy cascade in advanced MHD turbulence. It may act as a mechanism for the large-scale magnetic ropes formation in the solar convective zone and spiral galaxies.
Original languageEnglish
Title of host publicationCOSMIC DYNAMO
Pages255-261
StatePublished - 1993

Publication series

NameIAU SYMPOSIA

Fingerprint

Dive into the research topics of 'INVERSE ENERGY CASCADE IN ADVANCED MHD TURBULENCE (THE RNG METHOD)'. Together they form a unique fingerprint.

Cite this