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.
Boundary Extrusion Variables
Posted 2011年3月12日 GMT-5 08:41 Materials 0 Replies
Please login with a confirmed email address before reporting spam
I am trying to model a simple one dimensional system. I want to solve an equation of dc/dx=f (c,cp) where c is concentration in system and cp is concentration in the vicinity of boundary 2. For defining boundary condition 2, we need cp which is itself function of c at the BC.2. I have difficulty for defining BC. 2. I used PDE coefficient mode for defining governing equations and I used extrusion coupling variables in BC. 2 and destination is subdomain. The system gives error. the error is "undefined variable". I checked all constants but every thing is OK. It would be much appreciated if someone helps me.
Hello Saeed Shirazian
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.