modelMetalTubeFV

Cylindrical metal tube model with Nw finite volumes
Diagram of MetalTubeFVOpen the diagram
▶ Check in your browser

Extends from Icons.MetalWall.

Information

This is the model of a cylindrical tube of solid material.

The heat capacity (which is lumped at the center of the tube thickness) is accounted for, as well as the thermal resistance due to the finite heat conduction coefficient. Longitudinal heat conduction is neglected.

Modelling options

The following options are available:

  • WallRes = false: the thermal resistance of the tube wall is neglected.
  • WallRes = true: the thermal resistance of the tube wall is accounted for.

Parameters

TypeNameDefaultDescription
IntegerNw1Number of volumes on the wall ports
IntegerNt1Number of tubes in parallel
SI.LengthLTube length
SI.LengthrintInternal radius (single tube)
SI.LengthrextExternal radius (single tube)
RealrhomcmMetal heat capacity per unit volume [J/m^3.K]
SI.ThermalConductivitylambdaThermal conductivity
BooleanWallRestrueWall thermal resistance accounted for
RealpiModelica.Constants.pi
SI.AreaAm(rext^2 - rint^2)*piArea of the metal tube cross-section
SI.HeatCapacityCmNt*L*Am*rhomcmTotal heat capacity
Initialisation
SI.TemperatureTstartbar300Avarage temperature
SI.TemperatureTstart1TstartbarTemperature start value - first volume
SI.TemperatureTstartNTstartbarTemperature start value - last volume
SI.Temperature[Nw]TvolstartFunctions.linspaceExt(Tstart1, TstartN, Nw)
Choices.Init.OptionsinitOptsystem.initOptInitialisation option

Connectors

TypeNameDefaultDescription
ThermoPower.Thermal.DHTVolumesintInternal surface
ThermoPower.Thermal.DHTVolumesextExternal surface

Components

TypeNameDefaultDescription
ThermoPower.SystemsystemSystem wide properties
SI.Temperature[Nw]TvolVolume temperatures

Revisions