.TRANSFORM.Fluid.ClosureRelations.PressureLoss.Models.DistributedPipe_1D.TwoPhase_Developed_2Region_NumStable .TRANSFORM.Fluid.ClosureRelations.PressureLoss.Models.DistributedPipe_1D.TwoPhase_Developed_2Region_NumStableSame as SinglePhase_Developed_2Region_NumStable but extends from PartialTwoPhase which uses alphaV for calculation of density.