Menu

Discussion Forum

New Discussion
Filtrer

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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.

electric field intensity and equipotential surfaces

Posted 12 févr. 2014, 18:24 UTC−5 Low-Frequency Electromagnetics Version 4.4 3 Replies

Akim Borbuev
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi,
I just started using Comsol. Can anyone help me, please? I want to compute the electric field intensity and plot the equipotential surfaces produced by two cylindrical conductors of radius “r” installed horizontally and separated a distance “d”. The upper one has a potential of +V and the lower -V.

3 Replies Last Post 20 févr. 2014, 10:24 UTC−5
Sergei Yushanov Certified Consultant
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 13 févr. 2014, 08:57 UTC−5
Akim,

Attached is model of two cylindrical conductors with plot of electrical field and equipotential surfaces.

Best regards,
Sergei
Akim, Attached is model of two cylindrical conductors with plot of electrical field and equipotential surfaces. Best regards, Sergei
Akim Borbuev
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 18 févr. 2014, 18:15 UTC−5
Thank you for your response, Sergei! I could not figure out why there are two bigger circles, why you entered only one voltage, I mean I see only one V which is 1.0 V. Also could you please write down steps to simulate electric fields and equipotential surfaces so that I could simulate with different conductor shapes, conditions, etc.?
Thank you!

Sincerely,
Akim
Thank you for your response, Sergei! I could not figure out why there are two bigger circles, why you entered only one voltage, I mean I see only one V which is 1.0 V. Also could you please write down steps to simulate electric fields and equipotential surfaces so that I could simulate with different conductor shapes, conditions, etc.? Thank you! Sincerely, Akim
Sergei Yushanov Certified Consultant
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 20 févr. 2014, 10:24 UTC−5
Akim,

One big circle is for air domain, and outer layer in Circle 3 is Infinite Element Domain which is defined under Component 1/Definitions.

You can read about Infinite Elements in the documentation Comsol Multiphysics/Reference Manual/Infinite Element Domains and PML, p. 294.

There are two nodes for electric potential: Electric Potential 1 node sets voltage +V0 on the left cylinder, and node Electric Potential 2 node sets voltage –V0 on the right cylindrical conductor.

There are several examples in the Comsol model library with step by step instructions on how to set up this type of problem.

Regards,
Sergei
Akim, One big circle is for air domain, and outer layer in Circle 3 is Infinite Element Domain which is defined under Component 1/Definitions. You can read about Infinite Elements in the documentation Comsol Multiphysics/Reference Manual/Infinite Element Domains and PML, p. 294. There are two nodes for electric potential: Electric Potential 1 node sets voltage +V0 on the left cylinder, and node Electric Potential 2 node sets voltage –V0 on the right cylindrical conductor. There are several examples in the Comsol model library with step by step instructions on how to set up this type of problem. Regards, Sergei

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