Learning Forum

[peteroznewman]

Enclosure is used to make an external domain around an object such as a solid wing in a stream of air.

You have a tank, so the inside surfaces of the walls of the tank define the faces of the static zone.

Hide the mixer and make the rotating zone solid, then hide that too.

On the Prepare tab, use Volume Extract to fill the tank and all its static internal features with a fluid solid. If there is a free surface, create a plane and slice the top of the Volume Extract solid to delete the top of the tank volume to create the free surface.

Now unhide the rotating solid and use the Combine tool to subtract that from the Volume Extract static solid.

Now unhide the mixer and use the Combine tool to subtract that from the rotating solid.

Now you can delete the mixer solid and be left with two solids: the static zone and the rotating zone, then you can use the Share button on the Workbench tab.