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 The information provided may be out of date.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.

weak form boundary application

Please login with a confirmed email address before reporting spam

Hello everyone,

I 'm using comsol V3.5a

I would like to impose (on a wire surface) a Dirichlet boundary condition rho=rho_wire (space charge density).
For this, I must use Point Equation for rho_wire using PDE weak form (boundary application).

How I must make so that rho_wire becomes a Lagrange Multiplier that is used to impose on the wire the potential boundary condition : phi=phi_wire ?.

Best regards,

1 Reply Last Post 10 sept. 2014, 03:14 UTC−4
COMSOL Moderator

Hello Ahmed Kasdi

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.


Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 10 sept. 2014, 03:14 UTC−4
Have you got any solution to your problem? I am also having a problem regarding the weak form boundary application.
Have you got any solution to your problem? I am also having a problem regarding the weak form boundary application.

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.