modelRoomOnlySurfaceBoundary

Natural convection in an empty room with only surface boundary

Extends from Modelica.Icons.Example, Buildings.ThermalZones.Detailed.Examples.FFD.BaseClasses.PartialRoom.

Information

This model tests the coupled simulation of Buildings.ThermalZones.Detailed.CFD with the FFD program by simulating the natural convection in an empty room with only surface boundaries. It is also used to test the adiabatic boundary conditon in the FFD code.

Figure (a) shows the schematic of the FFD simulation. The following conditions are applied in the Modelica model:

  • East Wall: Fixed temperature at 40°C,
  • West Wall: Fixed temperature at 10°C,
  • North and South Wall, Ceiling, Floor: Fixed heat flux at 0 W/m2.

image

Figure (a)

Figure (b) shows the velocity vectors and temperature contours in degree Celsius on the X-Z plane at Y = 0.5 m as simulated by the FFD.

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Figure (b)

Components

TypeNameDefaultDescription
Buildings.HeatTransfer.Sources.FixedTemperatureTWesWalBoundary condition for the west wall
HeatTransfer.Sources.FixedTemperatureTEasWalTemperature of the east wall

Revisions

  • January 12, 2019, by Michael Wetter:
    Removed wrong use of each.
  • July 7, 2015 by Michael Wetter:
    Removed model for prescribed heat flow boundary condition as the value was zero and hence the model is not needed. This is for issue 439.
  • December 31, 2013, by Wangda Zuo:
    First implementation.