Self and mutual inductance Calculation 3D (Ivar Kjelberg)

Hello,

I am a newbie in Comsol and i am using the version 4.2a right now. I am trying to calculate the self and mutual inductance between 2 coils in 3D. i tried to search for different solutions in the forums here but none of the them solve my problem. I can't attach my model here because it is so big so i really appreciate if u can help me and mention your email here so i can send the model to u and sorry if it takes too long to open or compile.

I am having few problems with it:

1. I can't find the best way to excit the primary coil, i was thinking of creating an air cylinder between the beginning and the end of the coil ( like the tutoriel inductor_3D) and to put a terminal and ground on these endings. is it the best way for my case or is there an easier way to excit the primary coil??

2. To calculate the inductances (self and mutual) , i found in different forums different solutions but what is the best one for my case using the newer version of Comsol and can you please explain it in details because i am a beginner.


Thanks in advance

Jad TAKI