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Charge density extraction and model coupling
Posted Apr 5, 2011, 11:02 a.m. EDT Low-Frequency Electromagnetics, Materials, Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 4.0a 1 Reply
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Hi everyone,
I am modeling charge distribution in a model that looks like a plate capacitor, where one plate is small and very thin, and the other plate is very large. I do this by modeling the top plate as a work plane, and the bottom plate as large enough so it's effect converges to a certain value.
Now I extract the charge distribution by taking the electric field just below and just above the plate, and thus calculating the dielectric displacement en thus the charge distribution.
Question 1: Is this the best way to handle this situation or does COMSOL have more advanced features that can deal with this?
Secondly I calculate these charge distributions in MATLAB, after exporting the parametrized electric field magnitude, I would like to do this within COMSOL so I can feed the charge distribution in to additional physics calculation.
Question 2: Can I take parametrized surfaces within the solver so I can do calculations there and feed this in to other modules during the calculation?
I hope my problem is clear to you. Thanks in advance,
Louis
I am modeling charge distribution in a model that looks like a plate capacitor, where one plate is small and very thin, and the other plate is very large. I do this by modeling the top plate as a work plane, and the bottom plate as large enough so it's effect converges to a certain value.
Now I extract the charge distribution by taking the electric field just below and just above the plate, and thus calculating the dielectric displacement en thus the charge distribution.
Question 1: Is this the best way to handle this situation or does COMSOL have more advanced features that can deal with this?
Secondly I calculate these charge distributions in MATLAB, after exporting the parametrized electric field magnitude, I would like to do this within COMSOL so I can feed the charge distribution in to additional physics calculation.
Question 2: Can I take parametrized surfaces within the solver so I can do calculations there and feed this in to other modules during the calculation?
I hope my problem is clear to you. Thanks in advance,
Louis
1 Reply Last Post Apr 6, 2011, 4:41 a.m. EDT