Aspen Physical Property System - Physical Property Models

Property Model Model Name Phase(s)Pure Mixture
Redlich-Kister GMREDKIS L S — X
Scatchard-Hildebrand GMXSH L — X
Symmetric Electrolyte NRTL GMENRTLS L — X
Three-Suffix Margules GMMARGUL L S — X
UNIFAC GMUFAC L L1 L2 — X
UNIFAC (Lyngby modified) GMUFLBY L L1 L2 — X
UNIFAC (Dortmund modified) GMUFDMD L L1 L2 — X
UNIQUAC GMUQUAC L L1 L2 — X
Unsymmetric Electrolyte NRTL GMENRTLQ L — X
van Laar GMVLAAR L — X
Wagner interaction parameter GMWIP S — X
Wilson GMWILSON L — X
Wilson model with liquid molar
volume
2 Thermodynamic Property Models 13
GMWSNVOL L — X
Vapor Pressure and Liquid Fugacity Models
Property Model Model
Name
General Pure Component Liquid
Vapor Pressure
Property Phase(s)Pure Mixture
PL0XANT PL L L1 L2 X —
API Sour SWEQ PHILMX L — X
Braun K-10 BK10 PHILMX L — X
Chao-Seader PHL0CS PHIL L X —
Grayson-Streed PHL0GS PHIL L X —
Kent-Eisenberg ESAMINE PHILMX,
GLMX,
HLMX,
SLMX
L — X
Maxwell-Bonnell PL0MXBN PL L L1 L2 X —
Solid Antoine PS0ANT PS S X —
Heat of Vaporization Models
These models calculate DHVL.
Property Model Model Name Phase(s)Pure Mixture
General Pure Component Heat
of Vaporization
DHVLWTSN L X —
Clausius-Clapeyron Equation DHVLCC L X —
Molar Volume and Density Models
These models calculate VL (pure liquid), VLMX (liquid mixture), or VS (pure
solid), except for Brelvi-O'Connell which calculates VLPM.
Property Model Model Name Phase(s)Pure Mixture
API Liquid Volume VL2API L — X
Brelvi-O'Connell VL1BROC L — X