modelWindowWithShade

Natural convection in an empty room with exterior walls, windows and shades

Extends from Modelica.Icons.Example (Icon for runnable examples), Buildings.ThermalZones.Detailed.Examples.FFD.BaseClasses.PartialRoom (Partial model for a room).

Information

This model tests the cosimulation of Buildings.ThermalZones.Detailed.CFD with the FFD program by simulating natural convection in a room with only exterior walls and windows with shades.

Figure (a) show the schematic of FFD simulation. The walls and the windows are exposed to the ambient environment. The wall is well insulated and the initial temperature is 20°C. The initial temperature for the room air is 17°C.

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Figure (a)

Figure (b) shows the velocity vectors and temperature contours in degree Celsius on the X-Z plane at Y = 0.5 m, at t = 300 s as simulated by the FFD.

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Figure (b)

Note: The current version of the FFD program does not support a moving boundary. Thus, the shade can only be at a fixed position as determined by the parameter uSha_fixed={0.5,0.5}.

Parameters

TypeNameDefaultDescription
IntegernConExtWin (from PartialRoom)0Number of constructions with a window
IntegernConBou (from PartialRoom)0Number of surface that are connected to constructions that are modeled inside the room
IntegernSurBou (from PartialRoom)0Number of surface that are connected to the room air volume
IntegernConExt (from PartialRoom)0Number of exterior constructions withour a window
IntegernConPar (from PartialRoom)0Number of partition constructions
HeatTransfer.Data.OpaqueConstructions.Insulation100Concrete200matLayExtConstruction material for exterior walls
HeatTransfer.Data.GlazingSystems.DoubleClearAir13ClearglaSysData record for the glazing system

Components

TypeNameDefaultDescription
Buildings.ThermalZones.Detailed.CFDroo (from PartialRoom)Room model
Modelica.Blocks.Sources.ConstantqConGai_flow (from PartialRoom)Convective heat gain
Modelica.Blocks.Sources.ConstantqRadGai_flow (from PartialRoom)Radiative heat gain
Modelica.Blocks.Routing.Multiplex3multiplex3_1 (from PartialRoom)
Modelica.Blocks.Sources.ConstantqLatGai_flow (from PartialRoom)Latent heat gain
Buildings.BoundaryConditions.WeatherData.ReaderTMY3weaDat (from PartialRoom)

Revisions

  • August 13, 2013, by Wangda Zuo:
    First implementation.