GuiCommand:Container| {{GuiCommand Name: FEM ConstraintBodyHeatSource MenuLocation: Model , Thermal boundary conditions and loads , Body heat source Workbenches: FEM_Workbench Version: 0.19 SeeAlso: FEM_tutorial }} {{GuiCommandFemInfo Solvers: CalculiX, Elmer }}

FEM ConstraintBodyHeatSource

Description

Defines an internally generated body heat given in W/kg.

(v1.0)

: Can also define the heat source in W.

Usage

1. Press the '''Body heat source''' button or select Model → Thermal boundary conditions and loads → Body heat source from the menu.

2. (v0.21) : Press the Add button. For a 3D analysis, select a \'solid\' (body) from your model, for a 2D analysis select a face.

3. Set the value:

   {{VersionMinus|0.20}}
   
   : Since the tool has no task dialog, use the [property editor](wiki-test2.php?gitpage=Property_editor) and set the property **Heat Source**.

   • (v0.21)

     : Enter the body heat in W/kg.

   • (v1.0)

     : Select the mode:

     • Dissipation Rate - enter the dissipation rate in W/kg .
     • Total Power - enter the total power in W.

Limitations

• {{VersionMinus|0.20}}: The body heat source is applied to the whole model, meaning all bodies of the setup. It is not possible to select an individual body.

• {{VersionMinus|0.21}}: This feature only works with the Elmer solver.

Notes

• For more information see this forum thread and following posts. This thread may also be useful.

• Elmer examples can also be found in Elmer GUI Tutorials.

• (v1.0) : This feature uses the *DFLUX card in CalculiX.

• (v1.0) : Since CalculiX expects body heat flux input in W/mm\^3 while for Elmer it\'s W/kg, the conversion of the specified value (in W or W/kg) is done internally for each solver, using the volume of the selected solid and the density of the material assigned to it, if needed.

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