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Plotting electric filed between two electrodes using comsol 3.5a.

Posted Oct 4, 2010, 1:58 p.m. EDT 1 Reply

Anil Shrirao
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Hi,
I am using comsol 3.5a for simulating the electric filed between two copper electrodes. I have two rectangular region acting as two copper electrode and outer rectangal enclosing two copper electrode tectangles. Seperation between two copper electrode is 0.2 unit and I had applied potential of 1V to one elctrode and second electrode is ground. When I solve and plot I the electric field then I am getting maximum electric field 0.3 v/m which is not correct as the electric field in this system should be 1V/0.2m = 5V/m. Does anybody help me in identifying what is wrong in my simulation and why I am getting undesired electric field.
Thanks
Anil Shrirao
1 Reply Last Post Oct 5, 2010, 9:50 a.m. EDT
Per Sundqvist
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Posted: 1 decade ago Oct 5, 2010, 9:50 a.m. EDT
It depends on the potential of your other electrodes or whatever it is (boundary of some kind). Make the box around the two electrodes very big and you will roughly have your 5V/m. The size of the electrodes are finite also and you have sharp cornes. This will modify the elecric field picture.
Best,
/Per
It depends on the potential of your other electrodes or whatever it is (boundary of some kind). Make the box around the two electrodes very big and you will roughly have your 5V/m. The size of the electrodes are finite also and you have sharp cornes. This will modify the elecric field picture. Best, /Per

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