Periodicities in 3D transient magnetics

Altair Forum User

Hello,

I would like to use periodicities for a toroidal core in Flux3D transient magnetics (12.3). I have set up a simple example with a non-linear steel core and a non-meshed coil. The periodicity is set to cyclic conditions but somehow the magnetic flux won’t concentrate in the steel region.

I tried the full model with the same geometry and it looks fine, the flux is concentrated inside the steel region. So there must be a problem with the boundary or the periodicity.

How do I have to set up the boundaries/periodicities/formulations to get to correct results?

Thanks in advance.

Best regards

Patrick

Unable to find an attachment - read this blog

Altair Forum User

Hello,

I never used periodicities, but I used symmetries. Your problem may be the formulations for the non-meshed coils:

Did you tried to change in 'Edit Coil' --> 'Electrical' --> 'Symmeries and periodicities: ...' between 'in series' or 'parallel'?

An other possibility to change the boundary conditions are face regions. You can try to set them on the faces between the periodicities. 

I hope this would help you a little bit.

asoualmi

Hello,

Here is a link that gives you details on the use of periodicity in Flux:

file:///D:/Altair/flux/Flux/Help/Flux/english/Website/index.html?PeriodiciteAPropos

 

Best regards.

Altair Forum User

Thanks for your replies.

Symmetries are working for me as well. For the periodicity I tried to edit the non-meshed coil and to change the boundary conditions like you suggested, but I still get the same results.

I set up the model with meshed coils but no difference there.

I have read the documentation on how to use periodicities and think that I have taken into account all of the mentioned points.

Or am I missing something in my model? Or is it not possible to model such type of periodicities?

Best regards

Patrick