Multi Component Flow Modeling
I am a relatively new user to ANSYS FLUENT 13.0, but am jumping right into dirty details of it. The area that I'm having trouble with is modeling three different real fluids, two at a time in the mixture. These fluids will be operating at supercritical temperatures and pressures. I have found and figured out how to model the mixture using the NIST Real Gas Models, but when I switch one of the fluids, FLUENT says it does not have the data necessary to solve. I do understand that FLUENT has its limitations with the NIST Real Gas Models, as it is stated in the User's Manual at the end of section 220.127.116.11.1.
The solution I came up with was to use the User-Defined Real Gas Model to model the mixture. I am not real familiar with writing UDFs, but is it possible to model a mixture of supercritical fluids? If so, are there any tips or examples of the UDF's that anyone can share with me?
Thank you in advance!
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