How can i clean up an assembled wind turbine to avoid meshing failure in Fluent designmodeller

I made wind turbine blades and hub and assembled the parts. I imported the wind turbine into Ansys fluent for simulation. in Designmodeller, under Details View, I changed Simplify Geometry and Simplify Topology to Yes . I generated my model and used Boolean to unite my 4 parts into a single solid. I used your Tools-repair for further repairs, but Repair Sharp Angles and Repair Slivers are failing.
How can I clean up the assembly in Solidworks before exporting to Ansys?