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Old   November 6, 2003, 14:31
Default Equation of state for water
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Atit Koonsrisuk
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I would like to model the flow that density of water (in liquid state) can vary. I read in 'Solver Theory' that CFX equipped with Redlich-Kwong and Vukalovich Virial equation of state. I think that water might be modeled by these equations. However I have no idea how to find the option for these equations in CFX-Build. Can anyone tell me where it is and how to set it up? Thank you very much.

Atit Koonsrisuk
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Old   November 6, 2003, 18:41
Default Re: Equation of state for water
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Neale
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These are only available as RGP files in CFX-5.6. You can use them in CFX-Pre by loading hitting the file button in the materials selector and then loading the two materials files. The Steam RGP files may not contain the data for the right pressure and temperature range you need though. In that case you need to contact your service rep to get the right RGP file.

Neale
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Old   November 9, 2003, 14:41
Default Re: Equation of state for water
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Atit Koonsrisuk
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I would like the density of water to vary in the simulation. However the equation of state that I have is the non-linear equation of density. How can I enter the equation of state in CFX-Build instead of follow your suggestion? Because I have only CFX-5.5.1. Or do you have any other suggestion. Thank you.

Atit
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