Video tutorial permanent magnet

Topics: AC/DC Module

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Roman Roman

Roman Roman

November 29, 2012 10:54am UTC

Video tutorial permanent magnet

Hi everyone!
I need calculate permanent magnet field.
I am absolute beginner. I can draw geometry but i can not assign material.
Could you send me video tutorial step by step demonstrates how to assign magnets.
I do not understand how create permanent magnet.

dipol.plus@gmail.com

Thanks

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Sergei Yushanov

Sergei Yushanov
Certified Consultant
AltaSim Technologies, LLC

November 29, 2012 3:54pm UTC in response to Roman Roman

Re: Video tutorial permanent magnet

Roman,

Permanent magnet can be created as following:

1. Use Magnetic Field, No Currents (mfnc) interface
2. Create geometry for magnet surrounded by air
3. Create material for air (by default all domain will be selected as air, which is OK)
4. Right-click “Magnetic Field, No Currents” node and select “Magnetic Flux Conservation”
5. In the “Magnetic” settings window, select your magnet domain in the Domain Selection section
6. Locate “Magnetic Field” section, and choose “Remanent flux density” from the “Constitutive relation” selection list
7. In the “Remanent flux density” edit window, define Br vector components. If your magnet orientation is North-South, then define vector as Br={0,0,Brz_value}

Good luck,

Sergei Yushanov

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Andrea Ferrario

Andrea Ferrario
COMSOL Employee
Sweden

November 29, 2012 4:13pm UTC in response to Roman Roman

Re: Video tutorial permanent magnet

Roman,

All the models in the Model Library have a PDF file with step-by-step instructions on how to recreate them. In the AC/DC Module there is a model called permanent_magnet that can you may find useful.

--
Andrea Ferrario
Electromagnetics Group
COMSOL AB

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Roman Roman

Roman Roman

November 30, 2012 5:54am UTC in response to Andrea Ferrario

Re: Video tutorial permanent magnet

Thanks Sergei and Andrea!

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