.TRANSFORM.HeatExchangers.GenericDistributed_HX.FlowModel_tube .TRANSFORM.HeatExchangers.GenericDistributed_HX.FlowModel_tubeTube side flow models (i.e., momentum, pressure loss, wall friction)
model FlowModel_tube = TRANSFORM.Fluid.ClosureRelations.PressureLoss.Models.DistributedPipe_1D.SinglePhase_Developed_2Region_NumStable;