Magntic field analyses using current excitation

Hello,
I have started to use Comsol this week and have done some examples, but when I try to simulate my
model I hit some set backs.

The model has 16 electromagnetic poles with a pair of coils in quadrature wound on silicon steel.
So I have 32 coils each 90 turns.

I need to do the following:
1) Import the steel BH curve into Comsol for the Silicon Steel
2) Excite the coils using currents modeled by the following equations i.e.
ix = Ip*(cos(phi*pi/180)*cos(2*pi*freq*t)-r*sin(phi*pi/180)*sin(2*pi*freq*t));
iy = Ip*( sin(phi*pi/180)*cos(2*pi*freq*t)+r*cos(phi*pi/180)*sin(2*pi*freq*t));
Ip is the magnitude of the current phasor and r, freq are constants.
3) So should I choose stationary or time dependent for the study for the magnetic field physics?
4) Choose a method or physics for exciting the coils - is it Electrical Circuit(cir) or Magnetic Fields(mf)
5)The other question is how do I set the depth of my model

Generally my problem is similar to an assembly of inductors which produce flux similar to
a magnetic Halbach array.

Find the geometry attached (orange colored regions are coils, the grey regions are the
iron cored parts, the faint purplish color is defined as air).

I was able to import a 2D dxf file and I can also add the materials
(a) How can I view the domains and do I need to split the geometry to parts so that I can associate parts of the same material?

Regards and I hope you will assist me since am in the introductory stage.

Wanjiku