NIFS-506

FULL TEXT (PDF, 7302 KB)


Author(s):

H. Kitauchi and S. Kida

Title:

Intensification of Magnetic Field by Concentrate-and-Stretch of Magnetic Flux Lines

Date of publication:

Sep. 1997

Key words:

MHD dynamo, thermal convection. rotating spherical shell, concentrate-and-stretch

Abstract:

The mechanism of generation of magnetic field by thermal convection is investigated by analyzing the numerical solution to the Boussinesq magneto-hydrodynamic equations in a rotating spherical shell. The magnetic flux lines are intensified by concentrate and stretch around sinks In the outer boundary layer, on the equatorial plane and in the inner boundary layer, and the strong magnetic field is generated downstream of them. The magnetic flux lines are being stretched there irrespective as to whether fluid elements accelerate or decelerate.

List of NIFS Report (1997)Return toContents Page Return toNIFS Homepage
footer
 National Institute for Fusion Science
Copyright: 1995-2007 National Institute for Fusion Science (NIFS)
Address: 322-6,Oroshi-cho, Toki, GIFU, 509-5292, Japan
Telephone:+81-572-58-2222