specific entropy as function of density and temperature
function s_props_dT extends Modelica.Icons.Function; input Units.SI.Density d "density"; input Units.SI.Temperature T "Temperature"; input ThermoSysPro.Properties.WaterSteam.Common.IF97BaseTwoPhase aux "auxiliary record"; output Units.SI.SpecificEntropy s "specific entropy"; end s_props_dT;