Models

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All phase equilibria calculations performed in VLXE are based on the use of cubic equations of state (EOS).

A very large number of equations of state have been proposed since van der Waals made the first EOS.

Six EOS are included in VLXE. Depending on the EOS a different number of mixing rules are included.

 

Equations of state included

Peng/Robinson
Soave/Redlick/Kwong
Sanchez/Lacombe (Original)
Sanchez/Lacombe (Ideal gas limit)
PC-SAFT
Copolymer PC-SAFT

 

 

Models for the ideal gas heat capacity included:

DIPPR
Polynomial expression