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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

Press the '''Body heat source''' button or select Model → Thermal boundary conditions and loads → Body heat source from the menu.
(v0.21) : Press the Add button. For a 3D analysis, select a \'solid\' (body) from your model, for a 2D analysis select a face.
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.

⏵ documentation index > FEM > FEM ConstraintBodyHeatSource

This page is retrieved from https://github.com/FreeCAD/FreeCAD-documentation/blob/main/wiki/FEM_ConstraintBodyHeatSource.md

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