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Modeling help needed! Magnet going back and forth in coil
Posted Jul 16, 2015, 1:47 p.m. EDT Low-Frequency Electromagnetics Version 5.0 1 Reply
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As the topic says, my model has a magnet and a torus. I use magnetic field->stationary study to model the magnet and structural mechanics->frequency domain to model the vibrating torus. This way I get a B and v to calculate current density j.
However, B and v is the value at equilibrium position. How can I get j for any position of the torus or a j vs t curve?
However, B and v is the value at equilibrium position. How can I get j for any position of the torus or a j vs t curve?
1 Reply Last Post Jul 23, 2015, 10:07 a.m. EDT
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Posted:
9 years ago
Hi,
If the magnet is moving with a fixed prescribed oscillations, you would use the Magnetic Fields physics with Moving Mesh physics. For example, see the following example:
www.comsol.com/model/voltage-induced-in-a-coil-by-a-moving-magnet-14163
Note that here the magnet is oscillating with a known frequency and voltage is induced in the coil next to it. If you model the coil as a "Single Turn Coil" you will see the induced current density as well.
Best Regards,
Nirmal Paudel
COMSOL Employee
USA
If the magnet is moving with a fixed prescribed oscillations, you would use the Magnetic Fields physics with Moving Mesh physics. For example, see the following example:
www.comsol.com/model/voltage-induced-in-a-coil-by-a-moving-magnet-14163
Note that here the magnet is oscillating with a known frequency and voltage is induced in the coil next to it. If you model the coil as a "Single Turn Coil" you will see the induced current density as well.
Best Regards,
Nirmal Paudel
COMSOL Employee
USA