SimScale CAE Forum

Airflow is moving randomly inside enclosure

Hello there, I am having this issue with the airflow in my simulation. It seems to move weirdly. How to fix?

Project-
https://www.simscale.com/projects/krishchandran2/extended_essay_aerofoil_and_coefficient_of_drag/

Hey there!

To begin with, your inlet velocity is pointing out of the domain.

The other boundary condition that is wrong is the bottom moving wall. Is there a reason for it to be this way? Otherwise just change it to a slip wall, just like the other lateral walls.

hello there!
thank you for pointing that out, how do I make it flow inside the domain?

Just reverse the direction of the vector (make the value negative):

Still getting the same problem

Make the enclosure much bigger to avoid the effect from the walls.

Still getting the same issue, please help it’s not working for a few days now

Hello,

I just checked your project and the latest run seems to be working as intended:

If you’d like to update the community on the performed changes, that would be appreciated!

Cheers