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.

Error 7111 Singular matrix

Posted 20 lug 2010, 10:18 GMT-4 0 Replies

Tianyou YI
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

I'm using the PDE modes in Comsol to solve a nonlinear problem in a rectangle domain which is divided into two small rectangles and the rest. When I click the solve button, the following error message appear “ Error 7111 Singular matrix”. Dose anyone know where is the problem?

I also find that some boundaries around the two small rectangles are inactive, which means I cannot modify their boundary conditions. And I need to fix their boundary conditions, can anyone give me some help?

I have attached my file

Thanks in advance

Attachments:

0 Replies Last Post 20 lug 2010, 10:18 GMT-4
COMSOL Moderator

Hello Tianyou YI

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