modelPartialFlowHeatTransfer
Base class for any pipe heat transfer correlation
Extends from Modelica.Fluid.Interfaces.PartialHeatTransfer (Common interface for heat transfer models).
Information
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
| Type | Name | Default | Description |
|---|---|---|---|
| Internal Interface | |||
| Integer | n (from PartialHeatTransfer) | 1 | Number of heat transfer segments |
| Boolean | use_k (from PartialHeatTransfer) | false | = true to use k value for thermal isolation |
| Ambient | |||
| SI.CoefficientOfHeatTransfer | k (from PartialHeatTransfer) | 0 | Heat transfer coefficient to ambient |
| SI.Temperature | T_ambient (from PartialHeatTransfer) | system.T_ambient | Ambient temperature |
| Internal interface › Geometry | |||
| Real | nParallel | Number of identical parallel flow devices | |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Fluid.Interfaces.HeatPorts_a | heatPorts (from PartialHeatTransfer) | Heat port to component boundary |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Medium.ThermodynamicState | states (from PartialHeatTransfer) | Thermodynamic states of flow segments | |
| SI.Area | surfaceAreas (from PartialHeatTransfer) | Heat transfer areas | |
| SI.HeatFlowRate | Q_flows (from PartialHeatTransfer) | Heat flow rates | |
| Modelica.Fluid.System | system (from PartialHeatTransfer) | System wide properties | |
| Medium.Temperature | Ts (from PartialHeatTransfer) | Medium.temperature(states) | Temperatures defined by fluid states |
| SI.Velocity | vs | Mean velocities of fluid flow in segments | |
| SI.Length | lengths | Lengths along flow path | |
| SI.Length | dimensions | Characteristic dimensions for fluid flow (diameter for pipe flow) | |
| Modelica.Fluid.Types.Roughness | roughnesses | Average heights of surface asperities |