Heat Source (Thin Layer, Thin Film, Fracture)
Use this subnode to add an internal heat source Qs within a thin layer, thin film, or fracture. Add one or more heat sources.
Boundary Selection
By default, the Heat Source node is applied on all boundaries where the parent node is applied. See Boundary Selection for details on how to change this setting.
Shell Properties
Different settings are available, depending on the settings in the Shell Properties section of the parent node:
When the Shell type is Layered shell in the Shells Properties section of the parent node, the Shell type is Layered shell as well in the Heat Source node. This option is not editable, but you can limit the contribution to individually selected layers by clearing the Use all layers check box. For a given Layered Material Link, Layered Material Stack, or Single Layer Material, you get access to a list of check boxes for the selection of the individual layers.
When the Shell type to Nonlayered shell in the Shells Properties section of the parent node, the Shell type is taken From parent feature in the Heat Source node. You can change to Nonlayered shell and override the parent node setting with a specific value or expression for the Thickness Lth.
You can visualize the selected layered materials and layers in each layered material by clicking the Layer Cross Section Preview and Layer 3D Preview buttons.
Material Type
Select an option in the Material type list to specify if the inputs of the Heat Source section are defined in the material or spatial frame:
The default option for the Heat Source node is Solid when added under Thin Layer and Fracture, which specifies that the heat source Qs is defined in the material frame. Because the heat transfer variables and equations are defined in the spatial frame, the inputs are internally converted to the spatial frame. See Conversion Between Material and Spatial Frames for details.
The Nonsolid option defines Qs in the spatial frame. No frame conversion is needed.
The From material option uses the option selected in the Material type list of the Material Properties section of the material applied on the domain on which the node is active.
Heat Source
Select the General source (default) or Heat rate button to define Qs.
For General source enter a value or expression for Qs as a heat source per volume.
For Heat rate define the heat rate Ps. In this case Qs = Ps ⁄ V where V equal to the volume of the layer selection.
Location in User Interface
Context Menus
More locations are available. For example:
Ribbon
Physics Tab with Thin Layer selected in the model tree: