Package Modelica.Fluid.SourcesDefine fixed or prescribed boundary conditions
Package Modelica.Fluid.Sources
Package Sources contains generic sources for fluid connectors to define fixed or prescribed ambient conditions.
Extends from Modelica.Icons.SourcesPackage (Icon for packages containing sources).
| Name | Description |
|---|---|
BaseClasses … | Base classes used in the Sources package (only of interest to build new component models) |
Boundary_ph | Boundary with prescribed pressure, specific enthalpy, composition and trace substances |
Boundary_pT | Boundary with prescribed pressure, temperature, composition and trace substances |
FixedBoundary | Boundary source component |
MassFlowSource_h | Ideal flow source that produces a prescribed mass flow with prescribed specific enthalpy, mass fraction and trace substances |
MassFlowSource_T | Ideal flow source that produces a prescribed mass flow with prescribed temperature, mass fraction and trace substances |
Model Modelica.Fluid.Sources.FixedBoundary
Model FixedBoundary defines constant values for boundary conditions:
Note, that boundary temperature, density, specific enthalpy, 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 pressure, do not have an effect.
Extends from Modelica.Fluid.Sources.BaseClasses.PartialSource (Partial component source with one fluid connector).
| Type | Name | Default | Description |
|---|---|---|---|
Integer | nPorts | 0 | Number of ports |
Boolean | use_p | true | select p or d |
AbsolutePressure | p | Medium.p_default | Boundary pressure |
Density | d | if use_T then Medium.density_pTX(Medium.p_default, Medium.T_default, Medium.X_default) else Medium.density_phX(Medium.p_default, Medium.h_default, Medium.X_default) | Boundary density |
Boolean | use_T | true | select T or h |
Temperature | T | Medium.T_default | Boundary temperature |
SpecificEnthalpy | h | Medium.h_default | Boundary specific enthalpy |
MassFraction | X[Medium.nX] | Medium.X_default | Boundary mass fractions m_i/m |
ExtraProperty | C[Medium.nC] | Medium.C_default | Boundary trace substances |
| Type | Name | Description |
|---|---|---|
FluidPorts_b | ports[nPorts] |
Model Modelica.Fluid.Sources.Boundary_pT
Defines prescribed values for boundary conditions:
If use_p_in is false (default option), the p parameter
is used as boundary pressure, and the p_in input connector is disabled; if use_p_in is true, then the p parameter is ignored, and the value provided by the input connector is used instead.
The same thing goes for 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 pressure, do not have an effect.
Extends from Modelica.Fluid.Sources.BaseClasses.PartialSource (Partial component source with one fluid connector).
| Type | Name | Default | Description |
|---|---|---|---|
Integer | nPorts | 0 | Number of ports |
Boolean | use_p_in | false | Get the pressure from the input connector |
Boolean | use_T_in | false | Get the temperature 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 |
AbsolutePressure | p | Medium.p_default | Fixed value of pressure |
Temperature | T | Medium.T_default | Fixed value of temperature |
MassFraction | X[Medium.nX] | Medium.X_default | Fixed value of composition |
ExtraProperty | C[Medium.nC] | Medium.C_default | Fixed values of trace substances |
| Type | Name | Description |
|---|---|---|
FluidPorts_b | ports[nPorts] | |
input RealInput | p_in | Prescribed boundary pressure |
input RealInput | T_in | Prescribed boundary temperature |
input RealInput | X_in[Medium.nX] | Prescribed boundary composition |
input RealInput | C_in[Medium.nC] | Prescribed boundary trace substances |
Model Modelica.Fluid.Sources.Boundary_ph
Defines prescribed values for boundary conditions:
If use_p_in is false (default option), the p parameter
is used as boundary pressure, and the p_in input connector is disabled; if use_p_in is true, then the p parameter is ignored, and the value provided by the input connector is used instead.
The same thing goes for the specific enthalpy and composition
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 pressure, do not have an effect.
Extends from Modelica.Fluid.Sources.BaseClasses.PartialSource (Partial component source with one fluid connector).
| Type | Name | Default | Description |
|---|---|---|---|
Integer | nPorts | 0 | Number of ports |
Boolean | use_p_in | false | Get the pressure 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 |
AbsolutePressure | p | Medium.p_default | Fixed value of pressure |
SpecificEnthalpy | h | Medium.h_default | Fixed value of specific enthalpy |
MassFraction | X[Medium.nX] | Medium.X_default | Fixed value of composition |
ExtraProperty | C[Medium.nC] | Medium.C_default | Fixed values of trace substances |
| Type | Name | Description |
|---|---|---|
FluidPorts_b | ports[nPorts] | |
input RealInput | p_in | Prescribed boundary pressure |
input RealInput | h_in | Prescribed boundary specific enthalpy |
input RealInput | X_in[Medium.nX] | Prescribed boundary composition |
input RealInput | C_in[Medium.nC] | Prescribed boundary trace substances |
Model Modelica.Fluid.Sources.MassFlowSource_T
Models an ideal flow source, with prescribed values of flow rate, temperature, composition and trace substances:
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 thing goes for the temperature and composition
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.
Extends from Modelica.Fluid.Sources.BaseClasses.PartialFlowSource (Partial component source with one fluid connector).
| Type | Name | Default | Description |
|---|---|---|---|
Integer | nPorts | 0 | Number of ports |
Boolean | use_m_flow_in | false | Get the mass flow rate from the input connector |
Boolean | use_T_in | false | Get the temperature 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 |
MassFlowRate | m_flow | 0 | Fixed mass flow rate going out of the fluid port |
Temperature | T | Medium.T_default | Fixed value of temperature |
MassFraction | X[Medium.nX] | Medium.X_default | Fixed value of composition |
ExtraProperty | C[Medium.nC] | Medium.C_default | Fixed values of trace substances |
| Type | Name | Description |
|---|---|---|
FluidPort_b | ports[nPorts] | |
input RealInput | m_flow_in | Prescribed mass flow rate |
input RealInput | T_in | Prescribed fluid temperature |
input RealInput | X_in[Medium.nX] | Prescribed fluid composition |
input RealInput | C_in[Medium.nC] | Prescribed boundary trace substances |
Model Modelica.Fluid.Sources.MassFlowSource_h
Models an ideal flow source, with prescribed values of flow rate, temperature and composition:
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 thing goes for the temperature and composition
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.
Extends from Modelica.Fluid.Sources.BaseClasses.PartialFlowSource (Partial component source with one fluid connector).
| Type | Name | Default | Description |
|---|---|---|---|
Integer | nPorts | 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 |
MassFlowRate | m_flow | 0 | Fixed mass flow rate going out of the fluid port |
SpecificEnthalpy | h | Medium.h_default | Fixed value of specific enthalpy |
MassFraction | X[Medium.nX] | Medium.X_default | Fixed value of composition |
ExtraProperty | C[Medium.nC] | Medium.C_default | Fixed values of trace substances |
| Type | Name | Description |
|---|---|---|
FluidPort_b | ports[nPorts] | |
input RealInput | m_flow_in | Prescribed mass flow rate |
input RealInput | h_in | Prescribed fluid specific enthalpy |
input RealInput | X_in[Medium.nX] | Prescribed fluid composition |
input RealInput | C_in[Medium.nC] | Prescribed boundary trace substances |