Dynamo mechanism: Effects of correlations and viscosities

Details Dynamo mechanism: Effects of correlations and viscosities Dynamo mechanism: Effects of correlations and viscosities

2004-02-23

arxiv.org/abs/cond-mat/0402567v1

Physics

Condensed Matter

Statistical Mechanics

To appear in EPJB (2004)

Scientific paper

10.1140/epjb/e2004-00107-0

We analyze the effects of the background velocity and the initial magnetic field correlations, and viscosities on the turbulent dynamo and the \alpha-effect. We calculate the \alpha-coefficients for arbitrary magnetic and fluid viscosities, background velocity and the initial magnetic field correlations. We explicitly demonstrate that the general features of the initial growth and late-time saturation of the magnetic fields due to the non-linear feedback are qualitatively independent of these correlations. We also examine the hydrodynamic limit of the magnetic field growth in a renormalization group framework and discuss the possibilities of suppression of the dynamo growth below a critical rotation. We demonstrate that for Kolmogorov- (K41) type of spectra the Ekman number M >1/2 for dynamo growth to occur.

Affiliated with

Also associated with

No associations

Rating

Dynamo mechanism: Effects of correlations and viscosities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dynamo mechanism: Effects of correlations and viscosities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamo mechanism: Effects of correlations and viscosities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-352062