.ThermofluidStream.Processes.Internal.Material .ThermofluidStream.Processes.Internal.MaterialEnumeration of materials where the roughness is approximately known. Used for a dropdown of selectable materials.
type Material = enumeration(other "Other", concrete "Concrete, ks = 5 mm", wood "Wood, ks = 0.5 mm", castIron "Cast iron, ks = 0.25 mm", galvanizedIron "Galvanized iron, ks = 0.15 mm", steel "Steel, ks = 0.059 mm", drawnPipe "Drawn pipe ks = 0.0015 mm");