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3d model magnet field speed

Posted 2020/06/07 8:19 JST 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 2020/06/26 11:45 JST
Robert Koslover Certified Consultant
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Posted: 5 years ago 2020/06/10 2:35 JST
Updated: 5 years ago 2020/06/10 2:36 JST

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: 5 years ago 2020/06/11 22:00 JST

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: 5 years ago 2020/06/13 8:51 JST
Updated: 5 years ago 2020/06/13 8:51 JST

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.

Attachments:

Feng Liu
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Posted: 5 years ago 2020/06/14 16:39 JST

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: 5 years ago 2020/06/26 11:45 JST

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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