OMC

modelMetalWall

Diagram of MetalWall

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Information

Model MetalWall represents a discretized 1-dimensional tube of solid material. The assumptions of the model are:

Wall thermal resistance is neglected (i.e. No temperature gradient in the wall)
Longitudinal thermal energy conduction is neglected
Dynamic thermal energy capacity is accounted for.
Modelling options
In the Initialization tab the following options are available:
- steadystate_T_wall: If it sets to true, the derivative of temperature is sets to zero during Initialization

Parameters

Type	Name	Default	Description
Integer	N	10	Number of cells
Modelica.Units.SI.Area	Aext		Heat exchange area external side
Modelica.Units.SI.Area	Aint		Heat exchange area internal side
Modelica.Units.SI.Area	Aext_i	Aext/N	Heat exchange area of one cell external side
Modelica.Units.SI.Area	Aint_i	Aint/N	Heat exchange area of one cell internal side
Modelica.Units.SI.Mass	M_wall		Wall mass
Modelica.Units.SI.SpecificHeatCapacity	c_wall		Specific heat capacity of the metal
Initialization
Modelica.Units.SI.Temperature	Tstart_wall_1		Wall temperature start value - first node
Modelica.Units.SI.Temperature	Tstart_wall_end		Wall temperature start value - last node
Modelica.Units.SI.Temperature[N]	Tstart_wall	linspace(Tstart_wall_1, Tstart_wall_end, N)	Start value of temperature vector (initialized by default)
Initialization › Initialization options
Boolean	steadystate_T_wall	true	if true, sets the derivative of T_wall to zero during Initialization

Connectors

Type	Name	Default	Description
Interfaces.Heat.ThermalPort	Wall_int
Interfaces.Heat.ThermalPort	Wall_ext

Components

Type	Name	Default	Description
Modelica.Units.SI.Temperature[N]	T_wall		Cell temperatures
Modelica.Units.SI.Power	Q_tot_int		Total heat flux exchanged by the internal thermal port
Modelica.Units.SI.Power	Q_tot_ext		Total heat flux exchanged by the external thermal port