OUTLET/OPENING Boundary (Water)
 

Hello everybody!!


In my simulation this message refering to my OUTLET appears:

****** Notice ****** |
| A wall has been placed at portion(s) of an OUTLET |
| boundary condition (at 3.4% of the faces, 2.7% of the area) |
| to prevent fluid from flowing into the domain. |
| The boundary condition name is: OUTLET. |
| The fluid name is: agua. |
| If this situation persists, consider switching |
| to an Opening type boundary condition instead.



My doubt is if the percentage of faces/area that are preventing fluid flowing out of the domain justify the change from OUTLET from OPENING or if it is a normal result for an OUTLET.

Thanks!

Best Regards

https://www.cfd-online.com/Wiki/Ansy...f_an_OUTLET.22

Also in a case I had, the message dissapeared upon refining the mesh in the outlet domain.