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electrical potentials

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Hi,
I´m analyzing the distribution of electrical potentials through different geometries with varying conductivities. An active electrode is firing with 1V under quasi-static conditions. To analyse the behaviour I modeled a big sphere which also contains the ground electrode and encloses the 'structure of interest'.
Now I want to manually define that the electrical potential on the big sphere should be 0, or how can I define Ve in a certain distance??

Hope someone can help!

Best, Manfred

2 Replies Last Post 30 apr 2013, 04:19 GMT-4
Edgar J. Kaiser Certified Consultant

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Posted: 1 decade ago 24 apr 2013, 15:04 GMT-4

Manfred,

you can apply a ground or electric potential BC to the sphere. It is unclear what you mean with 'Ve in a certain distance'?

Cheers
Edgar
--
Edgar J. Kaiser
www.emphys.com
Manfred, you can apply a ground or electric potential BC to the sphere. It is unclear what you mean with 'Ve in a certain distance'? Cheers Edgar -- Edgar J. Kaiser http://www.emphys.com

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Posted: 1 decade ago 30 apr 2013, 04:19 GMT-4
Thanks a lot Edgar,
I simply applied the ground potential on the spheric wall. However, a new question came up:
I changed the sphere to a cuboid setting it as ground. Is it possible in COMSOL to virtually prolong one side surface to infinite setting the potential to 0?

Cheers, Manfred
Thanks a lot Edgar, I simply applied the ground potential on the spheric wall. However, a new question came up: I changed the sphere to a cuboid setting it as ground. Is it possible in COMSOL to virtually prolong one side surface to infinite setting the potential to 0? Cheers, Manfred

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