isobaric expansion coefficient as function of pressure and temperature
function beta_props_pT extends Modelica.Icons.Function; input SI.Pressure p "pressure"; input SI.Temperature T "temperature"; input ThermalSeparation.Media.WaterBasedLiquid.BaseClasses.Common.IF97BaseTwoPhase aux "auxiliary record"; output SI.RelativePressureCoefficient beta "isobaric expansion coefficient"; end beta_props_pT;