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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Permeability

Posted 23.02.2016, 11:46 GMT-5 Low-Frequency Electromagnetics, Materials Version 4.3 3 Replies

Hamid Shahrouzi
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Hi
I'm modeling a laminated core with COMSOL 4.3 in 2D. I have defined the permeability of the steel with a BH curve. My model is working pretty good as we expected. I can plot the B and H on any cutline in the model but I can not read the permeability value in the model. The software returns the following error:

Failed to evaluate the available .
- Variable: mod1.mf.murxx
- Damain: 2 5 ....

Anybody knows what is the problem?
Regards
Hamid
3 Replies Last Post 24.02.2016, 08:22 GMT-5
Hamid Shahrouzi
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Posted: 9 years ago 24.02.2016, 04:35 GMT-5
I've checked a fixed value for permeability and COMSOL can show the value. But still there is problem with permeability when it is defined as a BH curve.
I've checked a fixed value for permeability and COMSOL can show the value. But still there is problem with permeability when it is defined as a BH curve.
Edgar J. Kaiser Certified Consultant
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Posted: 9 years ago 24.02.2016, 05:04 GMT-5
Hamid,

you can try to plot normB/(normH*mu0)

Cheers
Edgar

--
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Hamid, you can try to plot normB/(normH*mu0) Cheers Edgar -- Edgar J. Kaiser emPhys Physical Technology http://www.emphys.com
Hamid Shahrouzi
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Posted: 9 years ago 24.02.2016, 08:22 GMT-5
Hi

Thanks Edgar. Your solution works.

Is this a bug of the software or I've missed something in my model?

Regards
Hamied
Hi Thanks Edgar. Your solution works. Is this a bug of the software or I've missed something in my model? Regards Hamied

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