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.

How to add coupled boundary condition ?

Posted 2 sept. 2020, 21:43 UTC−4 Structural & Acoustics, General, Chemical Reaction Engineering 0 Replies

亚飞 王
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi

I am working on a diffusion/stress coupled problem by using species transport/solid mechanics modulues in COMSOL.

I tried to add a concentration BC, which is a function of the hydrostatic stress (hds):

c=f(hds, P)------------------------------(1)

hds is defined in the variable, which equals to the average of three principal stresses and is dependent on the position. P is the gas pressure, which is dependent on the species flux. Everything is fine when the stress effect is not included:

c=f(P)------------------------------------(2)

But the software shutdown immediately when the stress effect is added, i.e. equation (1).

Does anyone know the solution ？

Much appreciated !

Yafei

0 Replies Last Post 2 sept. 2020, 21:43 UTC−4
COMSOL Moderator

Hello 亚飞 王

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