Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Help with Periodic Boundary Conditions
Posted 6 sept. 2018, 21:35 UTC−4 Low-Frequency Electromagnetics, Modeling Tools & Definitions, Results & Visualization Version 5.3 0 Replies
Please login with a confirmed email address before reporting spam
Hi,
I'm trying to model a 20-turn toroidal inductor with a rectangular cross-section, using the mf interface. I'd like to measure the induced current flow and potential drop across the inductor due to a certain background magnetic field, as well as (at a later time) connecting this to an electrical circuit.
The full model is very difficult to mesh, so I'd like to use the symmetry that the inductor admits. I'm trying to use the periodic condition that the mf interface has, but to choose the boundaries for this node, I have to unselect the inductor wire from the mf interface. This means the induced current is not calculated, as the wire is not part of the mf physics domain. How can I properly implement the periodic boundary condition so I can model the inductor and find the induced current? I read something about sector symmetry for electric current physics, but the article was unclear about how to specifically implement this feature.
Unfortunately, explaining this problem is difficult, so I've attached the application as well as the STL file for a single turn of the inductor. Hopefully this makes it more clear. If anyone can help, it would be greatly appreciated, or attach articles or examples that clearly illustrate how to work this.
Best, Henry
Attachments:
Hello Henry Froland
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.