[chaudhry_hashim]

Hi, I am working on a simulation of axial fan with inlet and outlet duct in order to investigate the pressure drop across the fan. My fan Dia is 116 mm and i made the inlet of 300 mm, outlet of 500mm. I am using moving frame refernece for this case in which i am giving fixed rpm to a rotating region with velocity inlet and pressure outlet. The issue is whenever i run the simulation reversed flow occur and after few iterations it shows the error of floating point overflow/ kturbukence.
I am using surface remesher, segregated flow and polyhedral mesh as a mesh condition and steady, constant density with kepsilon turbulence model. I also attached the pictures of geometry, pressure and velocity results.

Please help me out I would be very thankful to you
Regards
Hashim