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How to calculate the residual part of the Gibbs free energy?

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Old   June 14, 2019, 22:56
Default How to calculate the residual part of the Gibbs free energy?
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Zhiyuan Liu
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Hi,
I want to obtain the critical radius of non-equilibirum condensation with my own expression in the CFD-Post.
R_cri=2*Tension/Density_liq/dG
dG is the residual part of the Gibbs free energy bettween actual state and saturated state at a constant vapor temperature.
dG=G(p,T_vap)-G_sat(p_sat,Tvap)

How to calculated the dG ?
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