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.

Forward and backward coupled PDEs?

Posted 1 mai 2014, 15:54 UTC−4 0 Replies

Sam
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

With Comsol 4.4 I want to solve two coupled PDEs. Time (t) goes from 0 to T:

Forward PDE, L1 is the PDE operator and initial u at t=0 is given:
L1(u)=w

Backward PDE, L2 is the PDE operator and final w at t=T is given:
L2(w)=u

I tried to transform the backward PDE to a forward one by changing the time variable, using t'=T-t but by doing this, u in the second PDE would start from u(T). So I think I need to reverse u or something, but I don't know how to do that. I appreciate your help!
0 Replies Last Post 1 mai 2014, 15:54 UTC−4
COMSOL Moderator

Hello Sam

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