The Heat Transfer in Solids Interface
The Heat Transfer in Solids (ht) interface () is used to model heat transfer in solids by conduction, convection, and radiation. A Solid model is active by default on all domains. All functionality for including other domain types, such as a fluid domain, is also available.
The temperature equation defined in solid domains corresponds to the differential form of the Fourier’s law that may contain additional contributions like heat sources.
When this version of the physics interface is added, these default nodes are added to the Model Builder: Solid, Thermal Insulation (the default boundary condition), and Initial Values. Then, from the Physics toolbar, add other nodes that implement, for example, boundary conditions and sources. You can also right-click Heat Transfer in Solids to select physics features from the context menu.
Physical Model
See Physical Model for a description of the Thickness (2D and 1D axisymmetric components), Cross sectional area (1D components), Cross sectional perimeter (1D components), and Reference temperature settings, and the check boxes available under the Physical Model section.
By default, no check boxes are selected in this version of the interface.
Consistent Stabilization
This section is available by clicking the Show More Options button () and selecting Stabilization in the Show More Options dialog box. See Consistent Stabilization for more details.
Inconsistent Stabilization
This section is available by clicking the Show More Options button () and selecting Stabilization in the Show More Options dialog box. See Inconsistent Stabilization for more details.
Discretization
See Discretization for more details.
Temperature
By default, the shape functions used for the temperature in solids are Quadratic Lagrange.
Irreversible transformation indicator
In addition, the discretization level of the Irreversible transformation indicator should also be set when the Irreversible Transformation subfeature is added under a Solid node. Otherwise this setting has no effect.
Dependent Variables
See Dependent Variables for details.
See Settings for the Heat Transfer Interface for a description of all the settings.
In the COMSOL Multiphysics Reference Manual see Table 2-4 for links to common sections and Table 2-5 to common feature nodes. You can also search for information: press F1 to open the Help window or Ctrl+F1 to open the Documentation window.