[RR16988]

Hello there!

I am pretty new to this forum and to ANSYS CFX, and I've been trying to simulate the flow of air through a De Laval Nozzle with a subsonic inlet and a supersonic outlet. I have scrummaged through some of the threads on the De Laval Nozzle here, but I couldn't really find anything on what I am having trouble with. Anyway, these are my inlet and outlet parameters:

Fluid Model : Total Energy with Shear Stress Transport
Inlet : Subsonic
Mass flow at the inlet : 0.69 kg/s (This is the only inlet parameter that is available)
Material : Air at 650 degree C (I am not sure if I have to enter this as the value of the Static Temperature or the Total Temperature at the inlet, since there is a dialog box for Static/Total Temperature, or whether I should enter this at all)
Outlet : Supersonic (Velocity > 550 m/s)

I tried setting the outlet flow type to 'Supersonic' with a monitor point near the outler region, but when I do the solution, I seem to get really wrong velocity values like 0.5-0.6 m/s at the monitor point. I don't really know what I am doing wrong here.

This is the nozzle I have sketched.

http://postimg.org/image/xivgcgsph/