The Heat Transfer in Fractures (htsh) interface (), found in the Thin Structures physics area under the Heat Transfer branch (), is used to model heat transfer by conduction, convection and radiation in porous thin structures. A Fracture model is active by default on all boundaries. All functionalities for including other boundary contributions, such as surface-to-surface radiation, are also available.

When this version of the physics interface is added, these default nodes are also added to the Model Builder: Fracture, Insulation/Continuity (a boundary condition), and Initial Values. Then, from the Physics toolbar, add additional nodes that implement, for example, edge or point conditions, and heat sources. You can also right-click Heat Transfer in Fractures to select physics features from the context menu.

By default, the Heat Transfer in Porous Media check box is selected under the Physical Model section.

This section is available by clicking the Show button () and selecting Stabilization. See Consistent Stabilization for more details.

This section is available by clicking the Show button () and selecting Stabilization. See Inconsistent Stabilization for more details.

This section is available when the Surface-to-surface radiation check box is selected in the Physical Model section. See Radiation Settings for more details.

This section is available by clicking the Show button () and selecting Discretization. By default, the shape functions used for the temperature are Linear. See Discretization for more details.