Underground basement with butterfly

[dvdbremt]

Check this one didn’t try it because the project didn’t start in the end… But ZhengrongTao’ answer looks good in paraview

Create a ground in Butterfly case

Hi, I was wondering if it was possible to implement a ground in an openfoam case (thanks to Butterfly) In my mind it would look like this [image] But maybe I’m mistaken on how to generate it. But if I generate the ground like an object then we would have something like this (see below) and this a totally other case (with false turbulences at the edge of my ground object). [image] Does someone have an idea? R,