SCALING PROPERTIES OF MAGNETIC DYNAMO WAVE-NUMBER POWER SPECTRA GENERATED BY LAGRANGIAN CHAOTIC FLOWS

Authors
REYL C ANTONSEN TM OTT E
Citation
C. Reyl et al., SCALING PROPERTIES OF MAGNETIC DYNAMO WAVE-NUMBER POWER SPECTRA GENERATED BY LAGRANGIAN CHAOTIC FLOWS, Physics of plasmas, 5(1), 1998, pp. 151-155
Citations number
17
Categorie Soggetti
Phsycs, Fluid & Plasmas
Journal title
Physics of plasmas → ACNP
ISSN journal
1070664X
Volume
5
Issue
1
Year of publication
1998
Pages
151 - 155
Database
ISI
SICI code
1070-664X(1998)5:1<151:SPOMDW>2.0.ZU;2-P
Abstract
Wavenumber power spectra of the magnetic field in kinematic dynamos of Lagrangian chaotic flows are investigated. Numerical integration of t he kinematic dynamo equations with magnetic Reynolds number R-m up to 10(5) shows that the wavenumber power spectrum of the magnetic field g enerated by smooth, Lagrangian chaotic flows obeys a power-law. This p roperty is theoretically predicted by a wavepacket model, whereby magn etic field wavepackets are evolved according to ordinary differential equations. (C) 1998 American Institute of Physics.