A three-dimensional, spherical, nonlinear interface dynamo.

Keke Zhang ,   University of Exeter

 A fully three-dimensional, nonlinear, time-dependent spherical interface dynamo is investigated using a finite element method
    based on the three-dimensional tedrahedralization of the spherical  system.
 The spherical interface dynamo model consists of the four  zones: an electrically conducting and uniformly rotating core,
a thin differentially rotating tachocline, a turbulent convection envelope and a nearly insulating exterior.
The four regions are coupled magnetically through the matching conditions at the  interfaces.
We shall report various results of the fully three-dimensional, nonlinear, kinematic spherical interface dynamos.