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3d model magnet field speed

Posted Jun 6, 2020, 7:19 p.m. EDT Low-Frequency Electromagnetics, Structural & Acoustics Version 5.4 5 Replies

Feng Liu
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in the 2d model ,In the Physics toolbar, click Domains and choose Velocity (Lorentz Term),however in the 3d model,click Domains,there is no Velocity (Lorentz Term)

5 Replies Last Post Jun 25, 2020, 10:45 p.m. EDT
Robert Koslover Certified Consultant
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Posted: 4 years ago Jun 9, 2020, 1:35 p.m. EDT
Updated: 4 years ago Jun 9, 2020, 1:36 p.m. EDT

Yes, but this is the velocity of the medium, not the field. See the attached, from Comsol's help system:

-------------------
Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
Yes, but this is the velocity of the medium, not the field. See the attached, from Comsol's help system:

Attachments:

Feng Liu
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Posted: 4 years ago Jun 11, 2020, 9:00 a.m. EDT

thank you but the magnetic and electric filed is fit for the Steady state solver however i want to use the velocity in Transient solver

thank you but the magnetic and electric filed is fit for the Steady state solver however i want to use the velocity in Transient solver
Robert Koslover Certified Consultant
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Posted: 4 years ago Jun 12, 2020, 7:51 p.m. EDT
Updated: 4 years ago Jun 12, 2020, 7:51 p.m. EDT

If you need to work with a material velocity in a 3D EM model, you could use the mef formulation, with a velocity term. This is available in the AC/DC module. See the screenshot images attached.

-------------------
Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
If you need to work with a material velocity in a 3D EM model, you could use the **mef** formulation, with a velocity term. This is available in the AC/DC module. See the screenshot images attached.

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Feng Liu
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Posted: 4 years ago Jun 14, 2020, 3:39 a.m. EDT

thank you,thank you but the magnetic and electric filed is fit for the Steady state solver however i want to use the velocity in Transient solver. the example falling_magnet.mph in the 2d is used for Transient solver.

thank you,thank you but the magnetic and electric filed is fit for the Steady state solver however i want to use the velocity in Transient solver. the example falling_magnet.mph in the 2d is used for Transient solver.
Feng Liu
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Posted: 4 years ago Jun 25, 2020, 10:45 p.m. EDT

i want to use the 2d axisymmetric to build the magnetic module,and use the 2d to build the piezoelectricity module,how to combine the 2d axisymmetric module and 2d module?

i want to use the 2d axisymmetric to build the magnetic module,and use the 2d to build the piezoelectricity module,how to combine the 2d axisymmetric module and 2d module?

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