Thank you for your answer.
"sorry for the late response" - No worries!
"Once i made a few changes to your RGP file according to the “Organization of an .rgp file”" - You're right! I missed to add the line;
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Since the SAT_TABLE is the same as for the vapour phase, I don't have to copy it in the RGP file for the N2VAP right?
Furthermore I have a question belonging to the ANSYS RGP TOOL. Is it possible to generate the RGP files for other components than the ones which are listed in the dat.txt? I tried to change the fluids (names/formulas) in the collum but it didnt work for me...(using names of the components in the fluids folder).
To save time I'm currently working with an untested rgp-tool (beta version) which was made by the company I work for. The organisation and the values of the RGP file look very promising/right. As I'm not very experienced with ANSYS CFX Multiphase I started to simulate a simple heated pipe of water before starting to work on my actual and more complex thesis.
The target is also to achieve a phase change.
- I took the water.rgp file with waterLIQ/waterVAP values inside and created two seperate new materials:
waterLIQ with the thermodynamic state "liquid" using the water.rgp.
waterVAP with the thermodynamic state "gas" using the same water.rgp.
- Created a new material: Water combining the two materials waterLIQ and waterVAP into a homogenous binary mixture while still using the same water.rgp file for the Saturation Properties with the right Component Name for the SAT_TABLE.
Now after setting up the simulation, I'm facing a really annoying problem. Ansys refuses to start with the initial conditions I set up before. The initial static temperature on the Inlet of the heated pipe is set to 300K but however Ansys is starting at 398K. After ~200 iterations and a converging deviation the solver suddenly realizes the right initial temperature/pressure and also the right density. Around 50 iterations later the simulations starts to diverge and crashes.
Unfortunately I'm running out of ideas since I doulechecked everything. Have you ever experienced something similar?
Pipewalls are smooth. No Slip Wall. Inlet is subsonic. waterLIQ mass fraction is set 1.0 at the inlet.
Thanks for the help so far!