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coupling "mf" and "mfnc"?

Posted Oct 13, 2010, 11:51 p.m. EDT Low-Frequency Electromagnetics, RF & Microwave Engineering Version 5.2 4 Replies

Xife
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please does anyone have an idea and if possible explain how i can create a model using physic - both "magnetic field"-mf and "magnetic field no current"-mfnc in different regions of the model?
the dependent variable for mfnc is Vm (magnetic scalar potential) and for mf are Ax, Ay and Az (vector potentials). what quantities in comsol do I use to connect both physics in my model?
--
merci
4 Replies Last Post Aug 4, 2017, 7:06 a.m. EDT
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Hello Xife

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Jose Perez
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Posted: 1 decade ago Mar 31, 2011, 3:08 a.m. EDT
Hey I am trying to do the same, but so far I haven't succeded, have you found any solution?
Hey I am trying to do the same, but so far I haven't succeded, have you found any solution?
Xife
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Posted: 1 decade ago Apr 1, 2011, 12:26 a.m. EDT
unfortunately, no.

I'm still hoping for an answer. i know some other FEM SW have this feature built-in. i think this would be an efficient computation method by reducing DOF created by COMSOL.

what is/are your reason(s) for trying to do this?

--
merci
unfortunately, no. I'm still hoping for an answer. i know some other FEM SW have this feature built-in. i think this would be an efficient computation method by reducing DOF created by COMSOL. what is/are your reason(s) for trying to do this? -- merci
Jose Perez
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Posted: 1 decade ago Apr 1, 2011, 3:32 a.m. EDT
I am studying the interaction between electromagnets and permanent magnets.

Well, I solved the issue using only "mf"

My first approach was to use both "mf" (for the electromagnet) and secondly "mfnc" for the permanent magnet.

I could'nt couple them correctly, so what I did is to select only "mf" and for the permanent magnet I set its properties using the Ampére's Law. I set the magnetization M in the the constitutive relation: B=u0H+u0M

The simulation ran well, at the moment I am checking if the results I got are correct.

Hope this helps, What are you working on?

Gracias a ti.
I am studying the interaction between electromagnets and permanent magnets. Well, I solved the issue using only "mf" My first approach was to use both "mf" (for the electromagnet) and secondly "mfnc" for the permanent magnet. I could'nt couple them correctly, so what I did is to select only "mf" and for the permanent magnet I set its properties using the Ampére's Law. I set the magnetization M in the the constitutive relation: B=u0H+u0M The simulation ran well, at the moment I am checking if the results I got are correct. Hope this helps, What are you working on? Gracias a ti.
Wajid Ali
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Posted: 7 years ago Aug 4, 2017, 7:06 a.m. EDT
Dear Jose Perez,
I have the same problem "To check the effect of permanent magnetic field on gold nano sphere for the case of absorption spectra".

Please share your expertise with me.

Best
Ali
Dear Jose Perez, I have the same problem "To check the effect of permanent magnetic field on gold nano sphere for the case of absorption spectra". Please share your expertise with me. Best Ali

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