modelWallConstProps
Pipe wall with capacitance, assuming 1D heat conduction and constant material properties
Information
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 (parametern) is meant to correspond to a connected fluid model discretization.Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | n | 1 | Segmentation perpendicular to heat conduction |
| SI.Length | s | Wall thickness | |
| SI.Area | area_h | Heat transfer area | |
| SI.Density | rho_wall | Density of wall material | |
| SI.SpecificHeatCapacity | c_wall | Specific heat capacity of wall material | |
| SI.ThermalConductivity | k_wall | Thermal conductivity of wall material | |
| SI.Mass | m | fill(rho_wall*area_h*s/n, n) | Distribution of wall mass |
| SI.Temperature | T_start | Wall temperature start value | |
| SI.TemperatureDifference | dT | Start value for port_b.T - port_a.T | |
| Assumptions › Dynamics | |||
| Modelica.Fluid.Types.Dynamics | energyDynamics | system.energyDynamics | Formulation of energy balance |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heatPort_a | Thermal port | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heatPort_b | Thermal port |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Fluid.System | system | ||
| SI.Temperature | Tb | ||
| SI.Temperature | Ta | ||
| SI.Temperature | T | Wall temperature |
Revisions
- 04 Mar 2006
by Katrin Prölß:
Model added to the Fluid library