I am trying to simulate a rotating mixer inside a water container. Howewer, lately I have stumbled upon a problem I have difficulty resolving and had no issues with before. It has to do with assignign the mesh as the domain for the simulation as seen in the picture:
I would appreciate if somebody could help me with understanding why this issue has started to emerge, and primarily how to resolve it, since as it is seen in the folowing screenshot I have made numerous simulations before and this error hasn´t occured then.
P.S: Note, that all of the simulations seen in the screenshot have been made before the error started to occur somewhere a week ago.
Hence I came to presume that CAD file has nothing to do with this error, nor does the mesh since it has changed several times during those previous simulation.
If anybody could help me with this issue i would be at most grateful. The project can be found in here: https://www.simscale.com/projects/Karlo/poskus_mesala/