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.
10000 magnets
Posted Aug 2, 2024, 9:49 a.m. EDT 1 Reply
Please login with a confirmed email address before reporting spam
Hello
I want to add 10,000 small magnets and evaluate their magnetic fields in a given volume. I have information about their orientation (polodial and toridial angles); the magnets have different magnetic moments, but their dimentions are all the same (cylinderical permanent magnets). How can I best do this? Is there an option where I can input the data for all these magnets from the file and implement it?
Thank you Yo
Please login with a confirmed email address before reporting spam
Yoni,
in principle you can generate a respective geometry by an appropriate model method as shown in the blog contribution by Walter Frei: https://www.comsol.com/blogs/how-to-create-a-randomized-geometry-using-model-methods I did something similar in the past in order to generate a cluster of air bubbles in a liquid.
Your task is a little more challenging because you need to assign the magnet properties to each of the magnets. This should be possible as well in a method, but I haven't seen it anywhere so far and I haven't done it by myself.
Next challenges will be handling such a model with ten thousands of nodes and finally to mesh and run it. You will need a big machine and much time for that.
In case your magnets are defined only by a dipole moment such as a magnetic point dipole it may be more efficient to superimpose all the ten thousand analytical expressions for the dipole fields. Of course this only works in case all the model is linear and the dipoles do not interact.
Cheers Edgar
-------------------Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com