.Modelica.Fluid.Dissipation.Utilities.Types.TwoPhaseFrictionalPressureLoss .Modelica.Fluid.Dissipation.Utilities.Types.TwoPhaseFrictionalPressureLosstype TwoPhaseFrictionalPressureLoss = enumeration(Friedel "Friedel correlation for frictional pressure loss", Chisholm "Chisholm correlation for frictional pressure loss");