Menu

Discussion Forum

New Discussion
Filtrer

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.

Test function for the gradient

Posted 22 juil. 2013, 11:43 UTC−4 0 Replies

Jorge Tiago
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Dear all,

I was reading the documentation and I couldn't find the answer for this question:

Assume that you are using P1 elements to discretize your solution with respect to the space (2D). Your solution takes zero value at the boundary, but the y derivative uy doesn't. what are the test functions that comsol uses to compute the integral of (uy)^2 over the boundary?

Note: I'm assuming that, once comsol has a solution u (and uy) and we want to integrate it (for instance using the "derived values"), the galerkin approximation u_h=sum u_i Phi_i is used.

Thank you in advance!

0 Replies Last Post 22 juil. 2013, 11:43 UTC−4
COMSOL Moderator

Hello Jorge Tiago

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.

Suggested Content