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.
Homogenization: Implement a "change of argument" for a dependent variable
Posted 8 mars 2019, 03:20 UTC−5 Parameters, Variables, & Functions 0 Replies
Please login with a confirmed email address before reporting spam
Dear all,
I'm a beginner on COMSOL and I have some problem on the definition of variable.
Indeed, I try to model a scaling problem by the homogenization theory (expansion asymptotic). I see how to proceed for the Homogenized and the cell problem but not for the DNS: my goal is to compare the Homogenized/DNS.
The exact equation for the DNS is
To do that I need my variable u (dependent variable for the 2D PDE module) under a contracted form u(X/epsilon) where epsilon is a small parameter (let's say 0.01) and X=(x,y) (the right-hand side represents the space coordinate in COMSOL).
Do you know how to implement this "change of variable"? Is there a possibility to define the argument of a variable?
Adel
Hello Adel Moreno
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.