rhoSimpleFoam no pressure drop?
 

Hello, I'm running rhoSimpleFoam in the geometry shown in the image.
The flow goes from the lower to the upper part. Everything seems ok after running the solver, except the pressure field. According to the results, the is no pressure drop through the channels, which makes no sense. I see no problems with the velocity field. Could someone please check and tell me what do I have to do in order to see the actual pressure drop and why it isn't showing?
I suspect the issue lies in the boundary conditions, but I don't see where it could be wrong.
Attached you may find the case and run it if you wish.
https://github.com/Shylos1/ChannelFl...main/Approach1
Let me know if you cannot see it.
As you can infer, I'm quite new in OpenFoam and CFD.
Thank you in advance.