.ThermalSeparation.FilmModel.StructuredPackedColumn.MS_mod.MassTransferCoeffLiq .ThermalSeparation.FilmModel.StructuredPackedColumn.MS_mod.MassTransferCoeffLiqmodel MassTransferCoeffLiq = ThermalSeparation.HeatAndMassTransfer.StructuredPackedColumn.Liquid.RochaStructured;