Hi there, the issue here is that the model needs a lot of cleanup. There are two main rules which are crucial for any flow simulation:
- Your CAD needs to be watertight: There must not be any holes except inlets and outlets.
- Your CAD must only contain solid parts. Shells or Sheets must not appear.
To learn more about cad preparation and troubleshooting have a look here:
Best regards,
Fillia