Heat Source (Heat Transfer in Shells Interface)
This node describes heat generation within the shell through a dsQ contribution to the right-hand side of Equation 4-50. If it is applied on a pair, note that the source term is applied on the source side.
Express heating and cooling with positive and negative values, respectively. Add one or more nodes as needed; all heat sources within a boundary contribute to the total heat source. Specify the heat source as the heat per volume in the domain, as a linear heat source, or as a heat rate.
Layer Selection
Select the applicable layers (the default setting is All layered materials) defining the required material properties for the node.
If no layered materials have been included yet, there is a shorthand available for creating a Single Layer Material, a Layered Material Link, or a Layered Material Stack (the plus, next to the Layered Material list).
When a layered material stack or link is selected from the Layered Material list, unselect the check boxes corresponding to layers where the node should not be applied in the Selection table.
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.
•
For a general description of layer and interface selections, see The Layer Selection and Interface Selection Sections.
•
You can provide material parameters with a through-thickness variation by explicitly or implicitly using expressions containing the extra dimension coordinate as described in Using the Extra Dimension Coordinates.
The desired selection for the node may correspond to boundaries with different layered materials. The All layered materials option allows to gather these materials to make the desired selection applicable for the node on the union of the boundaries where the layered materials are defined.
See Layered Material, Layered Material Link, Layered Material Stack, Layered Material Link (Subnode), and Single Layer Material in the COMSOL Multiphysics Reference Manual.
Material Type
These settings are the same as for the Heat Source node available for the other interfaces.
Heat Source
These settings are the same as for the Heat Source node available for the other interfaces.
In 2D components the heat source is multiplied by dz to account for the out-of-plane thickness.
You can specify the source to be a harmonic perturbation in a frequency domain analysis. To mark the source as being a harmonic perturbation, right-click the node and choose Harmonic Perturbation. Note that this updates the node’s icon. See Theory for Harmonic Heat Transfer for more details.
•
Theory for Heat Transfer in Thin Structures
•
Handling Frames in Heat Transfer
Location in User Interface
Context menus
 Heat Transfer in Shells>Heat Source
 Heat Transfer in Films>Heat Source
 Heat Transfer in Fractures>Heat Source
Ribbon
Physics Tab with Heat Transfer in Shells selected:
Boundaries>Heat Transfer in Shells>Heat Source