Density as function of pressure and specific enthalpy
function rho_props_ph extends Modelica.Icons.Function; input Modelica.Units.SI.Pressure p "pressure"; input Modelica.Units.SI.SpecificEnthalpy h "specific enthalpy"; input Common.InverseDerivatives_rhoT derivs "record for the calculation of rho_ph_der"; output Modelica.Units.SI.Density d "density"; end rho_props_ph;