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.
Flux across a boundary as source term
Posted 29 dic 2019, 05:23 GMT-5 General, Equation-Based Modeling Version 3.5a, Version 5.2a, Version 5.3, Version 5.3a, Version 5.4, Version 5.5 0 Replies
Please login with a confirmed email address before reporting spam
Good morning
I've a simple (i think) problem, but yet i can't find a proper solution.
In general terms I've an equation of the kind:
(i'm using the general pde module, but let's fix the idea and think is a fluid dynamic problem).
Now i want define a source term (
) in a specific way:
in my domain (let's say a big square) i've a region (a small circle), J is zero everywhere, but not in the circle where is equivalent to the mass flow that left this region. The total amount of liquind in the whole system keep increase, but locally in the circle is constant (the source "pump" the same amount of liquid that left at each time step).
Mostly i need to compute the flux that left the circular domain and use it as source term.
Thanks in advice for the help
Hello Gianmarco Venditti
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.