Hello David Fletcher
1. In Workflow panel inside AIM, right click on Geometry cell and select "Edit Geometry"
2. This will open the geometry in SpaceClaim within AIM
3. In SpaceClaim, right click on the solid and select "Suppress for Physics"
4. In SpaceClaim, go to Model tab menu and select "Close" to close SpaceClaim.
5. The updated model will now have only fluid body shown in AIM interface.