Mean square displacement in small-scale nonlinear dynamos

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6 Citations (Scopus)


The stretching property of an underlying fluid is studied in a simplified statistical model of small-scale nonlinear dynamos, via the evolution of the mean square displacement. The nonlinear effect of small-scale magnetic fields is consistently incorporated in the limit of low kinetic Reynolds number. The mean square displacement between two neighboring particles, as well as that of a single particle, is shown to be reduced due to the Lorentz force associated with small-scale magnetic fields. This reduction is suggested to lead to the suppression of stretching of magnetic field lines, and subsequently to the saturation of the growth of small-scale magnetic fields.

Original languageEnglish
Pages (from-to)1746-1751
Number of pages6
JournalPhysics of Plasmas
Issue number5
Publication statusPublished - 19 Apr 2000
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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