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.

Linear motion of a magnet - 3D

Posted Jan 7, 2019, 6:39 a.m. EST Low-Frequency Electromagnetics Version 5.3 2 Replies

Davide Gonella
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi, i need to implement the linear motion (at constant speed) of a magnet over a ferromagnetic tube. My goal is to plot the behaviour of the magnetic flux inside the metallic tube. The problem that i'm encountering is connected to the fact that linear motion couldn't be implemented by the Velocity (Lorentz term) in 3D simulations.

Do you have any idea about how to solve this prbolem? Thank you!

2 Replies Last Post Jan 9, 2019, 5:33 p.m. EST
Nirmal Paudel Tribhuvan University/Electrical Engineering
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 6 years ago Jan 7, 2019, 1:58 p.m. EST

Hi Davide,

You would need to use the coupling of multiple physics here if you are using (5.3 or older). a. Magnetic Fields, No Current - for modeling the fields in the magnet region and at the interface of moving and stationary domains. b. Magnetic Fields - for modeling the fields in the current carrying region (induced or applied) c. Moving Mesh - to introduce the motion of the magnet.

However, in 5.4, the Rotating Machinery, Magnetics has these three physics coupling already built in. Hope this helps.

BR/Nirmal

Hi Davide, You would need to use the coupling of multiple physics here if you are using (5.3 or older). a. Magnetic Fields, No Current - for modeling the fields in the magnet region and at the interface of moving and stationary domains. b. Magnetic Fields - for modeling the fields in the current carrying region (induced or applied) c. Moving Mesh - to introduce the motion of the magnet. However, in 5.4, the Rotating Machinery, Magnetics has these three physics coupling already built in. Hope this helps. BR/Nirmal
Davide Gonella
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 6 years ago Jan 9, 2019, 5:33 p.m. EST

Thank you Nirmal! I'm really grateful for your answer! I will try to fix my simulation.

Thank you Nirmal! I'm really grateful for your answer! I will try to fix my simulation.

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