Helmholtz function for region 3: f(d,T)
function f3 extends Modelica.Icons.Function; input SI.Density d "density"; input SI.Temperature T "temperature (K)"; output ThermalSeparation.Media.WaterBasedLiquid.BaseClasses.Common.HelmholtzDerivs f "dimensionless Helmholtz function and dervatives wrt delta and tau"; end f3;