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.
Weak formulation of Navier-Stokes
Posted 11.04.2022, 09:06 GMT-4 Fluid & Heat, Modeling Tools & Definitions, Equation-Based Modeling Version 6.0 0 Replies
Please login with a confirmed email address before reporting spam
I am trying to solve the incompressible Navier-Stokes equation with an unusual forcing term. I have tried to use the preset, inbuilt equations (Laminar flow) but the forcing term is such that these methods failed.
Therefore, I want to use the Weak PDE solver to solve Navier-Stokes. However, when I ran a simple test case (without the forcing term) the solution was complete garbage. I would like to know what I did wrong and how I can resolve it.
The test system is very straight-forward. The domain is 
with an inlet at 
and an outlet at 
.
The equations are the Incompressible Navier-Stokes system
Subject to no-slip conditions along the top and bottom of the channel 
and a constant pressure condition at the inlet and outlet (the constant is defined), 
and 
.
I have attached my code, I am trying to figure out what went wrong.
Attachments:
Hello Aaron Pim
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.