Hi @daniel11, ‘strength of the impeller’ you mean its mechanical strength? as well as forces produced by its induced flow?
If so splitting the impellors face into smaller faces and getting average pressure values for each face, and then using them as boundary conditions in an FEA might be a good method. I’m exploring this at the moment. As for strength of its winds, from my interpretation, a CFD analysis with rotating zone will give you both the average pressures and the forces produced by the rotating impeller.
Let me know your thoughts,