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.

Reduce the instability in coupled PDEs

Please login with a confirmed email address before reporting spam

I am simulating a model where I need to solve three PDEs of h(t), T(h,t) and d(h,T,t). The model runs smoothly but I get a problem with the initial instability solving T and d. I tried using segregated solver, but the instability still exists. Although the instability disappears quickly with time, it still haunts me because if I further let h couple with d, the result becomes very unstable. The files are attached. Is there some stabilization method I can use in PDE interface?


0 Replies Last Post 20.10.2015, 19:45 GMT-4
COMSOL Moderator

Hello Jiangzhi Chen

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.