[gustavoliveira]

Hello,


I am trying to simulate a stepped channel using the multiphase/interFoam/RAS/weirOverflow example as base. For the stepped channel, I created a .stl file and start to tests some refinaments around the channel with the snappyHexMesh tool (and after I used the extrudeMesh tool to run in 2D).



If I use refinament levels (2 3), in the instant 2 seconds, the velocity magnitude is:





If I use refinament levels (2 4), in the instant 2 seconds, the velocity magnitude is:




The behavior in the two cases is very diferent. In the level (2 3) there are a air movement above the channel that I cant explain, while in the level (2 4) the water behavior is not what I expect.



Someone knows why?