The ideal gas constant for moist air is computed from thermodynamic
state where the mass fractions of dry air and steam are
corrected of the mass fraction of liquid that does not count for
the gas contant calculation.
function gasConstant
extends Modelica.Icons.Function;
input ThermodynamicState state "Thermodynamic state";
output SI.SpecificHeatCapacity R "Mixture gas constant";
end gasConstant;