[Forsky]

Hello, I want to know how to extend outlet domain in ANSYS space claim. I made initial impeller shape in CF turbo software which includes complete flow domain e.g. inlet, outlet, hub and shroud. I am designing a centrifugal fan. Moreover I want to know about boundary conditions. The outlet of fan will be open to atmosphere. What to put as a reference pressure 1 atm, 0 atm or actual inlet pressure 1530 Pa. The inlet of fan have static pressure 1500 Pa and total pressure 1530 Pa. The mass flow rate is 1.633kg/s. What to put in at outlet. I also attached photograph of initial design where existing outlet is shown.

[ghorrocks]

How to extend the outlet domain in SpaceClaim?

1) Import solid model of part
2) Draw extended outlet domain
3) Remesh, set up CFX-Pre again and then solver.

If you do not know how to use SpaceClaim then have a look at the ANSYS tutorials.

For what boundary conditions to apply: Have a look at the CFX rotating machinery examples, and also the section of CFX documentation on choice of boundary conditions.