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Magnetic Field due to time varying Electric Potential

Posted Apr 23, 2011, 6:12 a.m. EDT Low-Frequency Electromagnetics, RF & Microwave Engineering Version 4.1 4 Replies

Mo Sayed
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Hello Everyone,

I am relatively new to COMSOL, I am trying to build a model to compute the magnetic field generated due to time varying electric potential along one of the boundaries. I believe the model is correct but I don't know why it doesn't compute the magnetic field; can anyone help me please??


The model is a multiphysics model which includes electrostaic module and electromagnetic module.

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4 Replies Last Post Jul 19, 2011, 9:39 p.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Apr 23, 2011, 8:08 a.m. EDT
Hi

the RF module needs a current to derive a potential A, not just an electric field on a boundary

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Good luck
Ivar
Hi the RF module needs a current to derive a potential A, not just an electric field on a boundary -- Good luck Ivar
Mo Sayed
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Posted: 1 decade ago Apr 24, 2011, 8:41 a.m. EDT
Dear Ivar,

Thank you very much for your immediate response,

Isn't there any other way to solve for the magnetic field generated due to time varying electric field without introducing a current??

Dear Ivar, Thank you very much for your immediate response, Isn't there any other way to solve for the magnetic field generated due to time varying electric field without introducing a current??
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Apr 24, 2011, 10:47 a.m. EDT
Hi

if its a periodic "time variant" case use the "emw" with a frequency domain sweep, then you could probably use ES to define your E field

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Good luck
Ivar
Hi if its a periodic "time variant" case use the "emw" with a frequency domain sweep, then you could probably use ES to define your E field -- Good luck Ivar
Sam Gage
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Posted: 1 decade ago Jul 19, 2011, 9:39 p.m. EDT
So I can use structural mechanics to move a magnet ina coil so current is produced ??
So I can use structural mechanics to move a magnet ina coil so current is produced ??

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