CPC Cubic equation of state

[pw0908]

Interesting cross over between the chain term in SAFT and a cubic equation of state: https://pubs.acs.org/doi/abs/10.1021/acs.iecr.2c00902

[ianhbell]

They didn't convert to residual Helmholtz energy, darn.

[pw0908]

They use the standard chain term so it should be just a matter of copying our code from SAFT into this eos. However, they've lost the cubic form so we'll probably need to label this eos as a generic one.

[ianhbell]

The loss of the cubic nature is a pretty big loss

[longemen3000]

they use the elliot RDF, that is g(β) = 1/(1 - 0.475*β). the original CPC paper shows the explicit residual helmholtz energy form.

[pw0908]

Should we classify it as a SAFT or a cubic?

Probably more of a SAFT but really disappointing they don't use the association term...

[longemen3000]

part 4: https://pubs.acs.org/doi/abs/10.1021/acs.iecr.3c02774