PartialPipeFlowHeatTransferBase 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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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Base class for heat transfer models that are expressed in terms of the Nusselt number and which can be used in distributed pipe models.
Parameters (6)
| n |
Value: 1 Type: Integer Description: Number of heat transfer segments |
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| 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 |
| alpha0 |
Value: 100 Type: CoefficientOfHeatTransfer (W/(m²·K)) Description: guess value for heat transfer coefficients |
Inputs (6)
| states |
Type: ThermodynamicState[n] Description: Thermodynamic states of flow segments |
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| 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 |
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Connectors (1)
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heatPorts |
Type: HeatPorts_a[n] Description: Heat port to component boundary |
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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 (1)
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Modelica.Fluid.Pipes.BaseClasses.HeatTransfer LocalPipeFlowHeatTransfer: Laminar and turbulent forced convection in pipes, local coefficients |