Menu

Discussion Forum

New Discussion
Filtra

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

lumped parameters - electrostatics

Posted 17 apr 2010, 15:31 GMT-4 2 Replies

Tewodros Tedo
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam


Hi fan of Comsols'

I was trying to calculate Lumped parameters for capacitive elements( more than one electrode) in a system using electrostatic application mode. I have got a problem that I can't assign two or more ports at the same time as input port, is there a possibility of doing that ?

Assigning one capacitive elements( electrode ) as input port I come to calculate the capacitance of that port( the already assigned one) by others ports a NEGATIVE value :((. what does -ve value of capacitance indicate , any interpretation?


best regards

2 Replies Last Post 19 apr 2010, 10:59 GMT-4
Lidia Campa
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 19 apr 2010, 09:28 GMT-4
Hi Tewodros,

You should take a look at the manuals. You have one or two examples of lumped parameters at AC/DC User's guide.
I think that you have to calculate all the capacitance values one by one, but I don't remember well right now.

I hope this helps you.
Lidia.
Hi Tewodros, You should take a look at the manuals. You have one or two examples of lumped parameters at AC/DC User's guide. I think that you have to calculate all the capacitance values one by one, but I don't remember well right now. I hope this helps you. Lidia.
Tewodros Tedo
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 19 apr 2010, 10:59 GMT-4
Hi Lidia,

I wanna say thank you very much for your replay. ya as you said the examples in the manual are the reference for me to proceed with the Lumped parameters for the capacitance. The problem I have encountered is that how could I interpret the negative capacitance comsol calculated for me ?
Hi Lidia, I wanna say thank you very much for your replay. ya as you said the examples in the manual are the reference for me to proceed with the Lumped parameters for the capacitance. The problem I have encountered is that how could I interpret the negative capacitance comsol calculated for me ?

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content