.TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.PackedBedControlVolume_L4.ThermalConductivity .TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.PackedBedControlVolume_L4.ThermalConductivitymodel ThermalConductivity = TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.EffectiveThermalConductivity.Constant;