BuildingSystems.Fluid.MixingVolumes.Validation.BaseClasses.MixingVolumeReverseFlow

# .BuildingSystems.Fluid.MixingVolumes.Validation.BaseClasses.MixingVolumeReverseFlow

Test model for mixing volume with flow reversal

## Information

This model is the base class to validate the mixing volume with air flowing into and out of the volume and heat, moisture or trace substance added to the volume.

The model `volDyn` uses a dynamic balance, whereas the model `volSte` uses a steady-state balance. The mass flow rate starts positive and reverses its direction at t=5 seconds.

## Contents

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

## Revisions

- April 29, 2021, by Michael Wetter:
  Reformulated constraint of replaceable model to avoid access of component that is not in constraining type.
  This is for IBPSA, #1473.
- December 23, 2019, by Michael Wetter:
  Changed constraining clause to ensure that heat port is present.
  This is for IBPSA, #1268.
- January 19, 2016, by Michael Wetter:
  First implementation.

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