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Magnetization problem

Posted Jul 9, 2015, 1:27 p.m. EDT Low-Frequency Electromagnetics Version 5.1 4 Replies

gerardm
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Hi all,
I am working on an electromagnetic problem. I am trying to simulate a multi-material (2 different materials) piece under the influence of a magnetic field generated by a coil.
For the sake of simplicity, I have just plotted the piece of interest and an external cylindric boundary (which represents the air inside the coil that is surrounding the piece of interest) and I am applying a magnetic field to the whole system.

I am trying to show the magnetization of both materials (defined according to their permeability values), but I cannot manage to depict values for air.

Does anyone have any tips?
Regards,
g.
4 Replies Last Post Aug 12, 2015, 10:28 a.m. EDT
AC
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Posted: 9 years ago Jul 9, 2015, 2:51 p.m. EDT
you can probably use infinite element domains which extends the region outside your model to infinity.
Without the actual model, it is hard to suggest any alternatives.
you can probably use infinite element domains which extends the region outside your model to infinity. Without the actual model, it is hard to suggest any alternatives.
Anna Maria Białostocka
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Posted: 9 years ago Jul 28, 2015, 11:02 a.m. EDT
Hi,
Very important are parameters of the materials and the mesh. What parameters and values of them did You put into model. Mesh should be regular. I'm working with almost the same problem. Could You send me the model? I'm working on version 4.3 and 5.1.
Anna
Hi, Very important are parameters of the materials and the mesh. What parameters and values of them did You put into model. Mesh should be regular. I'm working with almost the same problem. Could You send me the model? I'm working on version 4.3 and 5.1. Anna
He YeMa
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Posted: 9 years ago Jul 29, 2015, 8:48 p.m. EDT
My model : the part of core apply BH curve, I feel COMSOL calculate such problems are difficult,could you provide me some advises for the problems
My model : the part of core apply BH curve, I feel COMSOL calculate such problems are difficult,could you provide me some advises for the problems
Nirmal Paudel COMSOL Employee

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Posted: 9 years ago Aug 12, 2015, 10:28 a.m. EDT
Hi,

To solve a non-linear time dependent problems like this, we do recommend that you modify the Time Dependent solver as suggested in this Knowledge Based Entry:

www.comsol.com/support/knowledgebase/1127/

Best Regards,
Nirmal Paudel
Hi, To solve a non-linear time dependent problems like this, we do recommend that you modify the Time Dependent solver as suggested in this Knowledge Based Entry: http://www.comsol.com/support/knowledgebase/1127/ Best Regards, Nirmal Paudel

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