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Boundary Current Source and Sink

Posted 18.05.2018, 04:01 GMT-4 Electromagnetics, Low-Frequency Electromagnetics 4 Replies

Jonas Schulz
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Hi everyone,

I have a simple pair of electrodes, one with a current excitation of 1mA and a counter electrode with a current excitation -1mA, which is meant to be the "Boundary current sink" for the "boundary current source".

However, my computations won´t stop and simply run forever, so I´m not able to retrieve any results, from my simulation.

My question is, wether it is the right approach for this kind of setup, to use the Boundary Current Source feature for a source and a sink?

Thanks for the help Best regards

Jonas

Attachments:

4 Replies Last Post 19.05.2018, 05:10 GMT-4
Sergei Yushanov Certified Consultant
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Posted: 7 years ago 18.05.2018, 07:50 GMT-4

Jonas,

Attached is working model with appropriate boubdary conditions.

Regards,

Sergei

Jonas, Attached is working model with appropriate boubdary conditions. Regards, Sergei

Attachments:

Edgar J. Kaiser Certified Consultant
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Posted: 7 years ago 18.05.2018, 09:48 GMT-4

Hi Sergei,

I was wondering which way this internal boundary source works? It seems to violate current conservation. So I obviously I don't understand it. In what case would you apply it?

Cheers Edgar

-------------------
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Hi Sergei, I was wondering which way this internal boundary source works? It seems to violate current conservation. So I obviously I don't understand it. In what case would you apply it? Cheers Edgar
Sergei Yushanov Certified Consultant
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Posted: 7 years ago 18.05.2018, 11:35 GMT-4

Edgar,

Yes, open current path would violate current conservation law for the Magnetic Fields (mf) physics interface. Electric Currents (ec) interface doesn't require explicit modeling of closed loop for current flow. As I understood the problem, it is just a heat source for tissue heating.

Regards, Sergei

Edgar, Yes, open current path would violate current conservation law for the Magnetic Fields (mf) physics interface. Electric Currents (ec) interface doesn't require explicit modeling of closed loop for current flow. As I understood the problem, it is just a heat source for tissue heating. Regards, Sergei
Jonas Schulz
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Posted: 7 years ago 19.05.2018, 05:10 GMT-4

Jonas,

Attached is working model with appropriate boubdary conditions.

Regards,

Sergei

Thanks for the Help.

I just can´t quite see, where in the model you applied some changes. Everything looks the same, but the results from the one I uploaded are different.

Best regards

Jonas

>Jonas, > >Attached is working model with appropriate boubdary conditions. > >Regards, > >Sergei Thanks for the Help. I just can´t quite see, where in the model you applied some changes. Everything looks the same, but the results from the one I uploaded are different. Best regards Jonas

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