Temperature (Thin Layer, Thin Film, Fracture, and Heat Transfer in Shells Interface)
Use this subnode to specify the temperature on a set of lines (geometrical edges in 3D or geometrical points in 2D and 2D axisymmetric) that represent the boundaries of a thin domain (layer, film, fracture, or shell). Only edges (3D) or points (2D and 2D axisymmetric) adjacent to the boundaries can be selected in the parent node.
Edge Selection
Select the edges on which to specify the temperature. The Restrict to layered edges check box makes the node applicable only if a layered material is defined on the edge. If a layered material (Material with Layer thickness specified, Single Layer Material, Layered Material Link, or Layered Material Stack) is available, its name is then displayed beside the edge index (for example, slmat1), otherwise the edge is marked as not applicable.
Note that when the Shell type is Nonlayered shell in the Shells Properties section of the parent interface or node, the Restrict to layered boundaries check box is not editable.
In addition, in 2D, edges are modeled as points and this section is named Point Selection, containing a Restrict to layered points check box.
The desired selection for the node may correspond to boundaries with different layered materials.
See Layered Material, Layered Material Link, Layered Material Stack, Layered Material Link (Subnode), and Single Layer Materials in the COMSOL Multiphysics Reference Manual.
Shell Properties
This section is available only when the Shell type is Layered shell in the Shells Properties section of the parent interface or node. You can limit the contribution to individually selected layers by clearing the Use all layers check box. For a given Layered Material Link or Layered Material Stack, you get access to a list of check boxes for the selection of the individual layers.
Temperature
For User defined, enter a value or expression for the Temperature T0. Else, select an Ambient temperature defined in an Ambient Properties node under Definitions.
The equation for this condition is T = T0 where T0 is the prescribed temperature.
Constraint Settings
To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog box.
The Constraint settings can be set to Pointwise constraints (default) or Weak constraints. Select Weak constraints to replace the standard constraints with a weak implementation.
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Constraint Reaction Terms
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Weak Constraints
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Constraint Settings
You can specify a harmonic variation of the temperature value in a frequency domain analysis of perturbation type, by adding a Harmonic Perturbation subnode. See Theory for Harmonic Heat Transfer for more details.
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Thin Layer (Heat Transfer Interface) and Solid (Heat Transfer in Shells Interface)
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Thin Film (Heat Transfer Interface) and Fluid (Heat Transfer in Shells Interface)
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Fracture (Heat Transfer Interface) and Porous Medium (Heat Transfer in Shells Interface)
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Theory for Heat Transfer in Thin Structures
Shell Conduction: Application Library path Heat_Transfer_Module/Tutorials,_Thin_Structure/shell_conduction
Location in User Interface
Context Menus
Heat Transfer in Solids>Thin Layer>Temperature
Heat Transfer in Solids>Thin Film>Temperature
Heat Transfer in Porous Media>Fracture>Temperature
Heat Transfer in Shells>Temperature
Heat Transfer in Films>Temperature
Heat Transfer in Fractures>Temperature
Ribbon
Physics tab with Thin Layer, Thin Film, or Fracture selected in the model tree:
Attributes>Temperature
Physics tab with Heat Transfer in Shells selected in the model tree:
Egdes>Temperature