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Basic Parallel Plate Capacitor 3.5a - Integration Error
Posted Apr 19, 2011, 8:48 a.m. EDT Low-Frequency Electromagnetics, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization Version 3.5a 1 Reply
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I am trying to create a very simple model to test the integration tools in COMSOL 3.5 (I have 4.1 as well but the lack of perfect electric insulation in AD/DC mode makes this program less accessible - if this is possible, please let me know).
I have created a simple rectangle with dimensions of 1m x 1m x 1m and have placed a constant potential of 1V on one edge and a ground on the other. The remaining two parallel sides are electric insulation. Finally, the subdomain has been set as "air" so that the permittivity is e0.
When I solve this geometry and try to perform a normal current density boundary integral on either of the conductive boundaries, I am off by a factor of 100*pi.
Any insight or suggestions would be helpful,
Patrick
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You have an application mode with electric currents, but your "air" domain has "0" conductivity. I would not expect a large current then if you integrate over whatever area. And edges/boundaries inherit from the domains.
then why does 4.1 work, for me it has more options than 3.5 by now ?
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Good luck
Ivar