Hi,
In my journeys in Internet during corona I stumbled to a great reservoir of Elmer cases by dymaxionkin:
https://github.com/dymaxionkim/ElmerFEM_Examples
It includes some of the coolest Elmer cases also shown in video on youtube.
https://www.youtube.com/user/dymaxionkorea/videos
The cases often present previously demonstrated physical couplings taken to the next level. Great work by Kim!
-Peter