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.

Implementing weak constraints

Padmini Rangamani

I am trying to implement weak constraints on my boundary using a model coupling integration variable. The idea is that flow at the boundary is determined by change in the area at that time. Here are my specific questions:

(1) How do you implement constraints on a primary dependent variable? Whats the mathematical procedure you adopt to maintain the constraint?
(2) Do you use penalty or Augmented Lagrange method?
(3) If it is some thing else, how do you give it in COMSOL?
(4) What caveats should we look for and how do we be careful?


0 Replies Last Post Jan 17, 2013, 5:41 PM EST
COMSOL Moderator

Hello Padmini Rangamani

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.

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.