Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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.

Help with two group model

Please login with a confirmed email address before reporting spam

I am trying to make the two-energy-group model by using the "Coefficient Form PDE" module for both the fast group and thermal group. I am having trouble to find the correct solution for the two group neutron fluxes, because the time-dependent study gives results of almost zero, i.e., the trivial solution, the eigenvalue and/or stationary study gives more reasonable solutions with the same initial and boundary conditions. Could anyone please give me some guide and/or look at the attached file for pointing out my mistakes?
Thanks.


0 Replies Last Post 26 janv. 2014, 18:36 UTC−5
COMSOL Moderator

Hello Lei Tu

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.