modelMassFlowSource_h
Extends from Modelica.Fluid.Sources.BaseClasses.PartialSource (Partial component source with one fluid connector).
Information
Models an ideal flow source, with prescribed values of flow rate, temperature and composition:
- Prescribed mass flow rate.
- Prescribed specific enthalpy.
- Boundary composition (only for multi-substance or trace-substance flow).
If use_m_flow_in is false (default option), the m_flow parameter
is used as boundary pressure, and the m_flow_in input connector is disabled; if use_m_flow_in is true, then the m_flow parameter is ignored, and the value provided by the input connector is used instead.
The same applies to the temperature, composition and trace substances.
Note, that boundary temperature, mass fractions and trace substances have only an effect if the mass flow is from the boundary into the port. If mass is flowing from the port into the boundary, the boundary definitions, with exception of boundary flow rate, do not have an effect.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nPorts (from PartialSource) | 0 | Number of ports |
| Boolean | use_m_flow_in | false | Get the mass flow rate from the input connector |
| Boolean | use_h_in | false | Get the specific enthalpy from the input connector |
| Boolean | use_X_in | false | Get the composition from the input connector |
| Boolean | use_C_in | false | Get the trace substances from the input connector |
| Modelica.SIunits.MassFlowRate | m_flow | 0 | Fixed mass flow rate going out of the fluid port |
| Medium.SpecificEnthalpy | h | Medium.h_default | Fixed value of specific enthalpy |
| Medium.MassFraction[Medium.nX] | X | Medium.X_default | Fixed value of composition |
| Medium.ExtraProperty[Medium.nC] | C | fill(0, Medium.nC) | Fixed values of trace substances |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Interfaces.FluidPorts_b[nPorts] | ports (from PartialSource) | ||
| Modelica.Blocks.Interfaces.RealInput | m_flow_in | Prescribed mass flow rate | |
| Modelica.Blocks.Interfaces.RealInput | h_in | Prescribed fluid specific enthalpy | |
| Modelica.Blocks.Interfaces.RealInput[Medium.nX] | X_in | Prescribed fluid composition | |
| Modelica.Blocks.Interfaces.RealInput[Medium.nC] | C_in | Prescribed boundary trace substances |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Medium.BaseProperties | medium (from PartialSource) | Medium in the source |
Revisions
-
January 26, 2016, by Michael Wetter:
Addedunitandquantityattributes. -
May 29, 2014, by Michael Wetter:
Removed undesirable annotationEvaluate=true. -
September 29, 2009, by Michael Wetter:
First implementation. Implemenation is based onModelica.Fluid.