modelReverseBuoyancy3Zones

Model with three rooms and buoyancy-driven air circulation that reverses direction

Extends from Modelica.Icons.Example (Icon for runnable examples).

Information

This model is similar than Annex60.Airflow.Multizone.Validation.ThreeRoomsContam. However, the initial temperatures are such that at the start of the simulation, the flow direction between the three rooms reverses direction.

At the start of the simulation, the outdoor temperature is 15°C, and the temperatures of the volumes are 20°C at the top, 22°C at the bottom west and 25°C at the bottom east. Thus, initially there is a net flow circulation in the counter-clock direction. Because the volume on the east exchanges air with the outside, it cools down fast. Once it cooled down sufficiently, the flow direction between the three rooms reverses because the air in the bottom east is heaviest.

Components

TypeNameDefaultDescription
Annex60.Fluid.MixingVolumes.MixingVolumevolEas
Annex60.Airflow.Multizone.OrificeoriOutBot
Annex60.Airflow.Multizone.MediumColumncolOutTop
Annex60.Airflow.Multizone.OrificeoriOutTop
Annex60.Airflow.Multizone.MediumColumncolEasInTop
Annex60.Fluid.MixingVolumes.MixingVolumevolOut
Annex60.Airflow.Multizone.MediumColumncolEasInBot
Annex60.Airflow.Multizone.MediumColumncolOutBot
Annex60.Airflow.Multizone.MediumColumncolWesBot
Annex60.Airflow.Multizone.OrificeoriWesTop
Annex60.Airflow.Multizone.MediumColumncolWesTop
Annex60.Airflow.Multizone.DoorDiscretizedOperabledooOpeCloDiscretized door
Modelica.Blocks.Sources.Constantope
Annex60.Airflow.Multizone.MediumColumncol1EasBot
Annex60.Airflow.Multizone.OrificeoriEasTop
Annex60.Airflow.Multizone.MediumColumncolEasTop
Annex60.Fluid.MixingVolumes.MixingVolumevolTop
Annex60.Fluid.MixingVolumes.MixingVolumevolWes

Contents

NameDescription
Medium

Revisions

  • December 22, 2014 by Michael Wetter:
    Removed Modelica.Fluid.System to address issue #311.
  • November 10, 2011, by Michael Wetter:
    Added documentation.