Menu

Discussion Forum

New Discussion
Filter

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.

Transient magnetic field: mimic a wire

Posted Apr 1, 2025, 2:46 p.m. EDT Electromagnetics, MEMS & Piezoelectric Devices, Physics Interfaces 1 Reply

Jackson Vyletel
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hello, I have built a solid mechanics and magnetic fields multiphysics simulation. At a high level, the simulation includes a current-carrying wire (that generates a magnetic field), and a small, soft-magnet device at some distance from the wire. In the presence of the magnetic field, I study the deformation of the soft magnetic structure.

I now want to do this simulation in a transient domain, however I would like to eliminate the need to simulate the field from the wire. Instead, I would like to specify or easily generate a field with the same exact profile as the wire. The reason for this is that COMSOL is giving me trouble when I attempt to study the coupled physics involving the current carrying wire while in a transient domain. If I can instead specify a transient magnetic field (not coming from a wire, just a "magic" field, if you'd like), then I can avoid this problem.

I have made this field already by using the MFNC module and specifying the Hx Hy and Hz. It runs fine. However, I am wondering if there is/are better ways to do this?

Thank you.

1 Reply Last Post Apr 1, 2025, 8:12 p.m. EDT
Robert Koslover Certified Consultant
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 6 months ago Apr 1, 2025, 8:12 p.m. EDT

After first talking about the field from the wire, you then said that you have made the field by specifying Hx, Hy, and Hz, and it runs fine. So, if I understand that correctly, it sounds like you succeeded in specifying the "magic field" just as you wanted. Do you still envision that there is or should be a "better way"? Is there something else you would like to accomplish, but which isn't already working as you wish?

-------------------
Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
After first talking about the field from the wire, you then said that you have made the field by specifying Hx, Hy, and Hz, and it runs fine. So, if I understand that correctly, it sounds like you succeeded in specifying the "magic field" just as you wanted. Do you still envision that there is or should be a "better way"? Is there something else you would like to accomplish, but which isn't already working as you wish?

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content