isentropic specific enthalpy from p,s and good guesses of d and T
function water_hisentropic_dyn extends Modelica.Icons.Function; input SI.Pressure p "pressure"; input SI.SpecificEntropy s "specific entropy"; input SI.Density dguess "good guess density, e.g. from adjacent volume"; input SI.Temperature Tguess "good guess temperature, e.g. from adjacent volume"; input Integer phase "1 for one phase, 2 for two phase"; output SI.SpecificEnthalpy h "specific enthalpy"; end water_hisentropic_dyn;