WOLFRAM SYSTEMMODELER

WallConstProps

Pipe wall with capacitance, assuming 1D heat conduction and constant material properties

Wolfram Language

In[1]:=
SystemModel["Modelica.Fluid.Examples.HeatExchanger.BaseClasses.WallConstProps"]
Out[1]:=

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Simple model of circular (or any other closed shape) wall to be used for pipe (or duct) models. Heat conduction is regarded one dimensional, capacitance is lumped at the arithmetic mean temperature. The spatial discretization (parameter n) is meant to correspond to a connected fluid model discretization.

Parameters (10)

n

Value: 1

Type: Integer

Description: Segmentation perpendicular to heat conduction

s

Value:

Type: Length (m)

Description: Wall thickness

area_h

Value:

Type: Area (m²)

Description: Heat transfer area

rho_wall

Value:

Type: Density (kg/m³)

Description: Density of wall material

c_wall

Value:

Type: SpecificHeatCapacity (J/(kg·K))

Description: Specific heat capacity of wall material

k_wall

Value:

Type: ThermalConductivity (W/(m·K))

Description: Thermal conductivity of wall material

m

Value: fill(rho_wall * area_h * s / n, n)

Type: Mass[n] (kg)

Description: Distribution of wall mass

energyDynamics

Value: system.energyDynamics

Type: Dynamics

Description: Formulation of energy balance

T_start

Value:

Type: Temperature (K)

Description: Wall temperature start value

dT

Value:

Type: Temperature (K)

Description: Start value for port_b.T - port_a.T

Connectors (2)

heatPort_a

Type: HeatPort_a[n]

Description: Thermal port

heatPort_b

Type: HeatPort_a[n]

Description: Thermal port

Components (1)

system

Type: System

Used in Components (1)

BasicHX

Modelica.Fluid.Examples.HeatExchanger.BaseClasses

Simple heat exchanger model