function SlipRatio extends Modelica.Icons.Function; input Modelica.Fluid.Dissipation.Utilities.Types.VoidFractionApproach voidFractionApproach = Dissipation.Utilities.Types.VoidFractionApproach.Homogeneous "Choice of void fraction approach" annotation( Dialog(group = "Choices")); input SI.Density rho_g(min = Modelica.Constants.eps) "Density of gaseous phase" annotation( Dialog); input SI.Density rho_l(min = Modelica.Constants.eps) "Density of liquid phase" annotation( Dialog); input Real x_flow = 0 "Mass flow rate quality" annotation( Dialog); output Real SR "Slip ratio"; end SlipRatio;