modelReverseBuoyancy3Zones

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

Extends from Modelica.Icons.Example.

Information

This model is similar than IBPSA.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
IBPSA.Fluid.MixingVolumes.MixingVolumevolEas
IBPSA.Airflow.Multizone.OrificeoriOutBot
IBPSA.Airflow.Multizone.MediumColumncolOutTop
IBPSA.Airflow.Multizone.OrificeoriOutTop
IBPSA.Airflow.Multizone.MediumColumncolEasInTop
IBPSA.Fluid.MixingVolumes.MixingVolumevolOut
IBPSA.Airflow.Multizone.MediumColumncolEasInBot
IBPSA.Airflow.Multizone.MediumColumncolOutBot
IBPSA.Airflow.Multizone.MediumColumncolWesBot
IBPSA.Airflow.Multizone.OrificeoriWesTop
IBPSA.Airflow.Multizone.MediumColumncolWesTop
IBPSA.Airflow.Multizone.DoorDiscretizedOperabledooOpeCloDiscretized door
Modelica.Blocks.Sources.Constantope
IBPSA.Airflow.Multizone.MediumColumncol1EasBot
IBPSA.Airflow.Multizone.OrificeoriEasTop
IBPSA.Airflow.Multizone.MediumColumncolEasTop
IBPSA.Fluid.MixingVolumes.MixingVolumevolTop
IBPSA.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.