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using REFPROP for real gal simulation

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Old   December 22, 2010, 03:37
Default using REFPROP for real gal simulation
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I'm analyzing an ejector refrigeration system which uses co2 as its refrigerant. I need to write a user defined function to get the density as a function of temperature and pressure, so that the density can be found in each cell. As it is a real gas flow, i considered using refprop libraries for this purpose. This would let me not use the VOF model which would complicate matters. Hence what i thought was if i could write a function to extract value for density at every cell from refprop library tables, based on the remperature and pressure in that cell, this would analyse the flow as a single phase flow, but would perform calculations that would comply with 2 phase flow and results would be accurate enough. But the users guide says that the Refprop 7.0 database in fluent will help only for single phase flow. However, as i am going to define the problem as a single phase flow only, will it be okay for me to go ahead and use the refprop tables, or will my result be erroneous?

Please help me out...also if there is any other way i could go about with this, i would be glad
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