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Capacitor Examples - Capacitor with Uniform Dielectric
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Capacitor_same_dielectric.mph 1.4 MB
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Capacitor Examples - Capacitor with Uniform Dielectric

Konrad Walus, University of British Columbia

In this example, the electrostatic potential, electric field, and capacitance of a parallel plate capacitor with uniform dielectric is calculated. A dielectric constant of 12 (silicon) is used in the example. The electric field in between the two conductor plates is relatively constant and a non uniform fringing field appears outside the plates. The capacitance computed by COMSOL, which includes fringing is 2.7282*10^-10F/m. The capacitance calculated assuming no fringing is 2.6562*10^-10F/m, an error of 4.6%.

Model developed by Dr. Konrad Walus and Carl Tan

http://www.mina.ubc.ca/konradw_comsol_electrostatics

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User Comments

Saeed Anwar
May 8, 2010 at 3:05pm UTC

thanks a lot.
Clemens Nyffeler
Jul 9, 2010 at 1:35pm UTC

I can't get this to work. When I try to open it I get a strange message saying "error in opening zip file".

Sebastian Möhres
Jul 12, 2010 at 6:49am UTC

I have got the same problem as Clemens Nyffeler. What can I do?
Michal Radziwon
Jul 23, 2010 at 2:12pm UTC

The problem occurs when you try to open it with Comsol 4.0. Unfortunately this version is back compatible only with version 3.5a. So you need to open it in version 3.5a and save it again. Then you will be able to open in in comsol 4.0.

I do not have older version of Comsol, and I as well would really appreciate if somebody could "do the trick" and re-upload the files.

Best regards,
Mike

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