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Multi-Turn Coil Problem

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Hello everybody,

I am facing a problem using Comsol 5.0 and the AC/DC model. I just recently started using Comsol with no background.

Based on the Permanent Model in the Apllication Gallery, the AC/DC User's Guide and the PowerPoint Presentation 3D coils 43a I tried to model two cores with a multi-turn coil around it. The gerometries were imported using a step file.

First, I modelled just one core with the coil resulting in
www.dropbox.com/s/wr0pk2snaqteb1z/01.mph?dl=0
As a second step I added the second core with the coils and tried to reproduce the model just adding one multi-turn coil and let the other one just be a copper material resulting in
www.dropbox.com/s/nc40b5eqa3azwjg/02.mph?dl=0

Well, as can be seen I could not reproduce the first case in the second configuration and I am wondering why. Is the mesh choosen falsely? I added a big maximum size in order to model the sphere around the cores not too accurately.

If I could reproduce the result from 01 in 02 I would try to model the system with both coils.

I am really looking forward to your help because I cannot see what I should differently or where I did something horribly wrong due to missing experience.

Thanks in advance!

0 Replies Last Post Jul 24, 2015, 5:24 a.m. EDT
COMSOL Moderator

Hello Martin Schönenberg

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