AixLib.Obsolete.Year2019.Fluid.Sources.FixedBoundary

# .AixLib.Obsolete.Year2019.Fluid.Sources.FixedBoundary

Boundary source component

## Information

This model 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.

## Revisions

- May 13, 2019 by Jianjun Hu:
  Moved from AixLib.Fluid.Sources.FixedBoundary to here. This is for #1072.
- January 14, 2019 by Jianjun Hu:
  Changed to extend AixLib.Fluid.Sources.BaseClasses.PartialSource. This is for #1050.
- April 18, 2017, by Filip Jorissen:
  Changed `checkBoundary` implementation such that it is run as an initial equation since it depends on parameters only. See #728.
- January 26, 2016, by Michael Wetter:
  Added `unit` and `quantity` attributes.
- September 29, 2009, by Michael Wetter:
  First implementation. Implementation is based on `Modelica.Fluid`.

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