WOLFRAM SYSTEM MODELER
PartialFlowHeatTransferBase class for any pipe heat transfer correlation |
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Wolfram Language
In[1]:=
SystemModel["Modelica.Fluid.Pipes.BaseClasses.HeatTransfer.PartialFlowHeatTransfer"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Base class for heat transfer models of flow devices.
The geometry is specified in the interface with the surfaceAreas[n], the roughnesses[n]
and the lengths[n] along the flow path.
Moreover the fluid flow is characterized for different types of devices by the characteristic dimensions[n+1]
and the average velocities vs[n+1] of fluid flow.
See Pipes.BaseClasses.CharacteristicNumbers.ReynoldsNumber
for example definitions.
Parameters (5)
| n |
Value: 1 Type: Integer Description: Number of heat transfer segments |
|---|---|
| use_k |
Value: false Type: Boolean Description: = true to use k value for thermal isolation |
| k |
Value: 0 Type: CoefficientOfHeatTransfer (W/(m²⋅K)) Description: Heat transfer coefficient to ambient |
| T_ambient |
Value: system.T_ambient Type: Temperature (K) Description: Ambient temperature |
| nParallel |
Value: Type: Real Description: Number of identical parallel flow devices |
Inputs (6)
| states |
Type: ThermodynamicState[n] Description: Thermodynamic states of flow segments |
|---|---|
| surfaceAreas |
Type: Area[n] (m²) Description: Heat transfer areas |
| vs |
Type: Velocity[n] (m/s) Description: Mean velocities of fluid flow in segments |
| lengths |
Type: Length[n] (m) Description: Lengths along flow path |
| dimensions |
Type: Length[n] (m) Description: Characteristic dimensions for fluid flow (diameter for pipe flow) |
| roughnesses |
Type: Roughness[n] (m) Description: Average heights of surface asperities |
Outputs (1)
| Q_flows |
Type: HeatFlowRate[n] (W) Description: Heat flow rates |
|---|
Connectors (1)
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heatPorts |
Type: HeatPorts_a[n] Description: Heat port to component boundary |
|---|
Components (2)
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states |
Type: ThermodynamicState[n] Description: Thermodynamic states of flow segments |
|---|---|---|
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system |
Type: System Description: System wide properties |
Extended by (3)
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Modelica.Fluid.Pipes.BaseClasses.HeatTransfer Base class for pipe heat transfer correlation in terms of Nusselt number heat transfer in a circular pipe for laminar and turbulent one-phase flow |
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Modelica.Fluid.Pipes.BaseClasses.HeatTransfer ConstantHeatTransfer: Constant heat transfer coefficient |
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Modelica.Fluid.Pipes.BaseClasses.HeatTransfer IdealHeatTransfer: Ideal heat transfer without thermal resistance |