.HelmholtzMedia.Interfaces.PartialHelmholtzMedium.Transport.surfaceTension

Information

This is an implementation of the model as suggested by Somayajulu, G.R., which is an extension of the van der Waals surface tension correlation. The extended version has up to three terms with two parameters each. This algorithm uses T only, some mixture models also use liquid and vapour density.

Somayajulu, G.R.

A generalized equation for surface tension from the triple point to the critical point.
International Journal of Thermophysics (1988) 9, 559-566.
DOI: 10.1007/BF00503154

Van der Waals, J.D.

Thermodynamische Theorie der Kapillarität unter Voraussetzung stetiger Dichteänderung.
Zeitschrift für Physikalische Chemie (1894) 13, 657-725.

Interface

function surfaceTension
  input SaturationProperties sat;
  output SurfaceTension sigma;
end surfaceTension;