manu prabha anand

I am not sure about this, please check Vista AFD in work bench for design. AFD is for Axial Fan design, check documentation. I think working fluid density is different. It is by default for gas i think. You can use this for making geometry or other  available geometry. Or, If you already have a design , you have to make the fluid domain and then mesh and you can use this mesh to simulate in fluent.