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-   -   Peng Robinson Equation of State and Varying Specific Heat (http://www.cfd-online.com/Forums/star-ccm/115184-peng-robinson-equation-state-varying-specific-heat.html)

Jonny6001 March 25, 2013 17:35

Peng Robinson Equation of State and Varying Specific Heat
 
Hello,

I am looking at solving a compressible case which involves a gas that does not behave like an ideal gas. I am therefore using the Peng-Robinson equation of state that requires the critical temperature and pressure along with an accentricity factor, I can find these values from literature.

Does anyone have experience of the Peng-Robinson EOS within Star CCM? If so, did you have success?

Also the constant pressure specific heat of the gas I am simulation changes quite drastically with both temperature and pressure. Is there a way in Star CCM+ of defining the specific heat as a function of both temperature and pressure? Or do people usually simplify the pressure-temperature relationship to a simpler polynomial?

Thank you.


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