Annex60.Fluid.Sources.Examples.TraceSubstancesFlowSource

# .Annex60.Fluid.Sources.Examples.TraceSubstancesFlowSource

## Information

This model demonstrates the use of trace substances that are added to a volume of air. The source is a step function of 2 kg/s CO2 from t=0 second to t=0.5 second. The sensors `C` and `C1` measure the same concentration that initially increases and then remains constant as there is no flow through the volumes `vol` and `vol1`. The sensors `C2` and `C3` first meaure an increase in concentration, which then decays to zero as there is a mass flow rate with zero CO2 from the source `bou` to the sink `sin`.

## Contents

Name | Description
--- | ---
Medium |

## Revisions

- November 27, 2013 by Michael Wetter:
  Added pressure boundary condition to model. This is required for the new air model, which is incompressible. Otherwise, there will be no pressure reference in the system.
- September 19, 2013, by Michael Wetter:
  Simplified example.
- April 29, 2013, by Michael Wetter:
  Changed the initialization of the medium volumes from free initial conditions to `Modelica.Fluid.Types.Dynamics.FixedInitial`. This was required for `vol` and `vol1` to have the same computations for the initial states.
- September 18, 2008 by Michael Wetter:
  First implementation.

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