FluidPort
FluidPort_a
FluidPort_b
PortVolume
FixedMassFlowRate
FixedAmbient
ShortPipe
PartialTestModel
PartialTestModel2
Functions, connectors and models needed for the media model tests
Extends from Modelica.Icons.Package (Icon for standard packages), Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).
| Name | Description |
|---|---|
| FluidPort
|
Interface for quasi one-dimensional fluid flow in a piping network (incompressible or compressible, one or more phases, one or more substances) |
| FluidPort_a
|
Fluid connector with filled icon |
| FluidPort_b
|
Fluid connector with outlined icon |
| PortVolume
|
Fixed volume associated with a port by the finite volume method |
| FixedMassFlowRate
|
Ideal pump that produces a constant mass flow rate from a large reservoir at fixed temperature and mass fraction |
| FixedAmbient
|
Ambient pressure, temperature and mass fraction source |
| ShortPipe
|
Simple pressure loss in pipe |
| PartialTestModel
|
Basic test model to test a medium |
| PartialTestModel2
|
Slightly larger test model to test a medium |
Modelica.Media.Examples.Tests.Components.FluidPortInterface for quasi one-dimensional fluid flow in a piping network (incompressible or compressible, one or more phases, one or more substances)
Extends from Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| p | Pressure in the connection point [Pa] |
| m_flow | Mass flow rate from the connection point into the component [kg/s] |
| h | Specific mixture enthalpy in the connection point [J/kg] |
| H_flow | Enthalpy flow rate into the component (if m_flow > 0, H_flow = m_flow*h) [W] |
| Xi[Medium.nXi] | Independent mixture mass fractions m_i/m in the connection point [kg/kg] |
| mXi_flow[Medium.nXi] | Mass flow rates of the independent substances from the connection point into the component (if m_flow > 0, mX_flow = m_flow*X) [kg/s] |
| C[Medium.nC] | Properties c_i/m in the connection point |
| mC_flow[Medium.nC] | Flow rates of auxiliary properties from the connection point into the component (if m_flow > 0, mC_flow = m_flow*C) [kg/s] |
Modelica.Media.Examples.Tests.Components.FluidPort_aFluid connector with filled icon
Extends from FluidPort (Interface for quasi one-dimensional fluid flow in a piping network (incompressible or compressible, one or more phases, one or more substances)).
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| Name | Description |
|---|---|
| p | Pressure in the connection point [Pa] |
| m_flow | Mass flow rate from the connection point into the component [kg/s] |
| h | Specific mixture enthalpy in the connection point [J/kg] |
| H_flow | Enthalpy flow rate into the component (if m_flow > 0, H_flow = m_flow*h) [W] |
| Xi[Medium.nXi] | Independent mixture mass fractions m_i/m in the connection point [kg/kg] |
| mXi_flow[Medium.nXi] | Mass flow rates of the independent substances from the connection point into the component (if m_flow > 0, mX_flow = m_flow*X) [kg/s] |
| C[Medium.nC] | Properties c_i/m in the connection point |
| mC_flow[Medium.nC] | Flow rates of auxiliary properties from the connection point into the component (if m_flow > 0, mC_flow = m_flow*C) [kg/s] |
Modelica.Media.Examples.Tests.Components.FluidPort_bFluid connector with outlined icon
Extends from FluidPort (Interface for quasi one-dimensional fluid flow in a piping network (incompressible or compressible, one or more phases, one or more substances)).
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| Name | Description |
|---|---|
| p | Pressure in the connection point [Pa] |
| m_flow | Mass flow rate from the connection point into the component [kg/s] |
| h | Specific mixture enthalpy in the connection point [J/kg] |
| H_flow | Enthalpy flow rate into the component (if m_flow > 0, H_flow = m_flow*h) [W] |
| Xi[Medium.nXi] | Independent mixture mass fractions m_i/m in the connection point [kg/kg] |
| mXi_flow[Medium.nXi] | Mass flow rates of the independent substances from the connection point into the component (if m_flow > 0, mX_flow = m_flow*X) [kg/s] |
| C[Medium.nC] | Properties c_i/m in the connection point |
| mC_flow[Medium.nC] | Flow rates of auxiliary properties from the connection point into the component (if m_flow > 0, mC_flow = m_flow*C) [kg/s] |
Modelica.Media.Examples.Tests.Components.PortVolumeFixed volume associated with a port by the finite volume method
This component models the volume of fixed size that is associated with the fluid port to which it is connected. This means that all medium properties inside the volume, are identical to the port medium properties. In particular, the specific enthalpy inside the volume (= medium.h) is always identical to the specific enthalpy in the port (port.h = medium.h). Usually, this model is used when discretizing a component according to the finite volume method into volumes in internal ports that only store energy and mass and into transport elements that just transport energy, mass and momentum between the internal ports without storing these quantities during the transport.
Extends from Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| V | Fixed size of junction volume [m3] |
| Initial pressure or initial density | |
| use_p_start | Select p_start or d_start |
| p_start | Initial pressure [Pa] |
| d_start | Initial density [kg/m3] |
| Initial temperature or initial specific enthalpy | |
| use_T_start | Select T_start or h_start |
| T_start | Initial temperature [K] |
| h_start | Initial specific enthalpy [J/kg] |
| Only for multi-substance flow | |
| X_start[Medium.nX] | Initial mass fractions m_i/m [kg/kg] |
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| port |
Modelica.Media.Examples.Tests.Components.FixedMassFlowRateIdeal pump that produces a constant mass flow rate from a large reservoir at fixed temperature and mass fraction
Extends from Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).
| Name | Description |
|---|---|
| m_flow | Fixed mass flow rate from an infinite reservoir to the fluid port [kg/s] |
| X_ambient[Medium.nX] | Ambient mass fractions m_i/m of reservoir [kg/kg] |
| replaceable package Medium | Medium model |
| Ambient temperature or ambient specific enthalpy | |
| use_T_ambient | Select T_ambient or h_ambient |
| T_ambient | Ambient temperature [K] |
| h_ambient | Ambient specific enthalpy [J/kg] |
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| port |
Modelica.Media.Examples.Tests.Components.FixedAmbientAmbient pressure, temperature and mass fraction source
Model FixedAmbient_pt defines constant values for ambient conditions:
Note, that ambient temperature and mass fractions have only an effect if the mass flow is from the ambient into the port. If mass is flowing from the port into the ambient, the ambient definitions, with exception of ambient pressure, do not have an effect.
Extends from Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| Ambient pressure or ambient density | |
| use_p_ambient | Select p_ambient or d_ambient |
| p_ambient | Ambient pressure [Pa] |
| d_ambient | Ambient density [kg/m3] |
| Ambient temperature or ambient specific enthalpy | |
| use_T_ambient | Select T_ambient or h_ambient |
| T_ambient | Ambient temperature [K] |
| h_ambient | Ambient specific enthalpy [J/kg] |
| Only for multi-substance flow | |
| X_ambient[Medium.nX] | Ambient mass fractions m_i/m [kg/kg] |
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| port |
Modelica.Media.Examples.Tests.Components.ShortPipeSimple pressure loss in pipe
Model ShortPipe defines a simple pipe model with pressure loss due to friction. It is assumed that no mass or energy is stored in the pipe.
Extends from Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| dp_nominal | Nominal pressure drop [Pa] |
| m_flow_nominal | Nominal mass flow rate at nominal pressure drop [kg/s] |
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| port_a | |
| port_b |
Modelica.Media.Examples.Tests.Components.PartialTestModelBasic test model to test a medium
Extends from Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| p_start | Initial value of pressure [Pa] |
| T_start | Initial value of temperature [K] |
| h_start | Initial value of specific enthalpy [J/kg] |
| X_start[Medium.nX] | Initial value of mass fractions |
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
Modelica.Media.Examples.Tests.Components.PartialTestModel2Slightly larger test model to test a medium
Extends from Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |
| p_start | Initial value of pressure [Pa] |
| T_start | Initial value of temperature [K] |
| h_start | Initial value of specific enthalpy [J/kg] |
| X_start[Medium.nX] | Initial value of mass fractions |
| Name | Description |
|---|---|
| replaceable package Medium | Medium model |