Modelica.Fluid.Sources

Define fixed or prescribed boundary conditions

Information

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).

Package Content

Name	Description
FixedBoundary	Boundary source component
Boundary_pT	Boundary with prescribed pressure, temperature, composition and trace substances
Boundary_ph	Boundary with prescribed pressure, specific enthalpy, composition and trace substances
MassFlowSource_T	Ideal flow source that produces a prescribed mass flow with prescribed temperature, mass fraction and trace substances
MassFlowSource_h	Ideal flow source that produces a prescribed mass flow with prescribed specific enthalpy, mass fraction and trace substances
BaseClasses	Base classes used in the Sources package (only of interest to build new component models)

Modelica.Fluid.Sources.FixedBoundary

Boundary source component

Information

Model FixedBoundary defines constant values for boundary conditions:

• Boundary pressure or boundary density.
• Boundary temperature or boundary specific enthalpy.
• Boundary composition (only for multi-substance or trace-substance flow).

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 Sources.BaseClasses.PartialSource (Partial component source with one fluid connector).

Parameters

Connectors

Modelica.Fluid.Sources.Boundary_pT

Boundary with prescribed pressure, temperature, composition and trace substances

Information

Defines prescribed values for boundary conditions:

• Prescribed boundary pressure.
• Prescribed boundary temperature.
• Boundary composition (only for multi-substance or trace-substance flow).

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 Sources.BaseClasses.PartialSource (Partial component source with one fluid connector).

Parameters

Connectors

Modelica.Fluid.Sources.Boundary_ph

Boundary with prescribed pressure, specific enthalpy, composition and trace substances

Information

Defines prescribed values for boundary conditions:

• Prescribed boundary pressure.
• Prescribed boundary temperature.
• Boundary composition (only for multi-substance or trace-substance flow).

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 Sources.BaseClasses.PartialSource (Partial component source with one fluid connector).

Parameters

Connectors

Modelica.Fluid.Sources.MassFlowSource_T

Ideal flow source that produces a prescribed mass flow with prescribed temperature, mass fraction and trace substances

Information

Models an ideal flow source, with prescribed values of flow rate, temperature, composition and trace substances:

• Prescribed mass flow rate.
• Prescribed temperature.
• 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 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 Sources.BaseClasses.PartialFlowSource (Partial component source with one fluid connector).

Parameters

Connectors

Modelica.Fluid.Sources.MassFlowSource_h

Ideal flow source that produces a prescribed mass flow with prescribed specific enthalpy, mass fraction and trace substances

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 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 Sources.BaseClasses.PartialFlowSource (Partial component source with one fluid connector).

Parameters

Connectors