.TRANSFORM.HeatExchangers.GenericDistributed_HX_withMass.TraceMassTransfer_tube .TRANSFORM.HeatExchangers.GenericDistributed_HX_withMass.TraceMassTransfer_tubemodel TraceMassTransfer_tube = Fluid.ClosureRelations.MassTransfer.Models.DistributedPipe_TraceMass_1D_MultiTransferSurface.Ideal;