partial function criticalSurfaceTension_xi extends TILMedia.BaseClasses.PartialVLEFluidFunction; input TILMedia.VLEFluidTypes.BaseVLEFluid vleFluidType "VLEFluid type" annotation( choicesAllMatching = true); input SI.MassFraction[:] xi = TILMedia.Internals.massFraction_mixingRatio(vleFluidType.mixingRatio_propertyCalculation) "Mass fractions of the first nc-1 components"; output SI.SurfaceTension sigmac "Critical surface tension"; end criticalSurfaceTension_xi;