Surface Tension
The available surface tension models are presented below.
Gas–Liquid Surface Tension
Ideal
The gas–liquid surface tension is predicted by ideally mixing the pure species correlations. It is independent of pressure, vapor temperature or composition.
(2-262)
where the vapor–liquid surface tension correlations, σi,vl, must be specified for all species i, and are evaluated at the temperature of the liquid phase.
Winterfeld
Following Winterfeld (Ref. 76), the vapor–liquid surface tension is predicted by mixing the pure species correlations according to
(2-263)
It is independent of pressure, vapor temperature and composition. The vapor–liquid surface tension correlations and liquid density correlations must be specified for all species i, and are evaluated at the temperature of the liquid phase.