Mean-field buoyancy

Details Mean-field buoyancy Mean-field buoyancy

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...274..647k&link_type=abstract

Astronomy and Astrophysics, Vol. 274, p. 647 (1993)

Astronomy and Astrophysics

Astrophysics

15

Mhd, Turbulence, Sun: Magnetic Fields, Stars: Magnetic Fields

Scientific paper

The magnetic field buoyancy is derived in the framework of the mean-field magnetohydrodynamics. The usual linear dependence of the rise velocity on magnetic energy density is found for very weak fields only. The dependence is nonlinear and even non-monotonic for stronger fields. The initial increase of the buoyant velocity with the field strength changes to decrease for strong fields. The decrease is brought about by magnetic tension. The saturation of the mean-field buoyancy weakens substantially the limitations imposed by this effect on cosmic dynamo models. The time of buoyant rise from bottom to top of the solar convection zone is larger than two years for a field of arbitrary strength.

Affiliated with

Also associated with

No associations

Rating

Mean-field buoyancy 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 Mean-field buoyancy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mean-field buoyancy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1066556