Problems with calculating spray through the nozzle

Alina

Hello all! I have a problem calculating the spray through a nozzle of supercritical carbon dioxide into the expansion chamber during rapid expansion of a supercritical solution (RESS).
I set the following parameters:
General - Density-Based; steady;
Model - k-omega (SST);
Boundary Conditions - pressure-inlet (gauge total pressure - 180 atm, supersonic/initial gauge pressure - 180 atm, turbulent intensity - 5%, turbulent viscosity ratio - 10%);
pressure-outlet (gauge pressure - 1 atm)
Method - Implicit
Hybrid Initialization.
However, if I set the built-in Fluent real-gas-model as the material, then after several iterations the program crashes with exception "Ansys.Fluent.Cortex.CortexNotAvailableException" without finishing the calculation. I tried to set the properties of carbon dioxide using the UDF(https://pastecode.io/s/2qgrbnpr), but then I got incorrect values ​​for pressure,
velocity and temperature.

Can you please help me with setting the correct parameters so that I can calculate the speed, pressure, temperature, density?
Thanks in advance!

I am attaching the errors that the program displays and UDF.

James Derrick

Hello! Can you include your code snippet in the post itself? Unfortunately the pastebin link doesn't work.

dnwillia

You should really be using the NIST model or an RGP file for this. See the beta manual for the latter.

Alina

@James Derrick said:
Hello! Can you include your code snippet in the post itself? Unfortunately the pastebin link doesn't work.

Thank you for reply!
I can't include whole code in post because it's too long.
I published it on the pastebin, this link should work.
https://pastebin.com/KNRDcJY2

Alina

@dnwillia said:
You should really be using the NIST model or an RGP file for this. See the beta manual for the latter.

Thank you for reply!

There is a problem with this because if I use the NIST model the program crashes without finishing the calculation.