SCALAR MODEL FOR PLASMA TURBULENCE

Authors
OTTINGER JL CARATI D
Citation
Jl. Ottinger et D. Carati, SCALAR MODEL FOR PLASMA TURBULENCE, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 48(4), 1993, pp. 2955-2965
Citations number
26
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
48
Issue
4
Year of publication
1993
Pages
2955 - 2965
Database
ISI
SICI code
1063-651X(1993)48:4<2955:SMFPT>2.0.ZU;2-D
Abstract
A shell model is proposed to study the Hasegawa-Mima equation [Phys. F luids 21, 87 (1978)] describing the electric-potential fluctuations in microturbulent plasmas. The similarities with two-dimensional hydrody namic turbulence are discussed. Both the direct cascade of enstrophy a nd the reverse cascade of energy are investigated. The power-law spect ra related to these cascades as well as the fluxes and higher moments of the fluctuations are computed. These quantities appear to be in goo d agreement with both the usually accepted phenomenology and the multi fractal model.