Lots of good posts about how to setup these analyses in the forum. Generally straight forward flow on inlet and pressure on outlet. There are even suggestions and an example in the documentation. Have you checked them out?
It straight forward problem but impeller is enclosed and it has casing were the flow around the profile is taken place.In documentation it is acalled as global rotating regions and flow in impeller. so find the difference and guide me to fine tune the boundary conditions involved.
have you checked existing posts about this?
lots of great resources and discussions about this
most common is setup local rotating region (follow recommendations from tutorials, training, kb, and solving eng problems doc)
apply volume flow rate at inlet
pressure opening at outlet