Select the applicable layers (the default setting is All layered materials) defining the required material properties for the node.
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.
Note that this section is not editable when Porous Medium is the default node of the Heat Transfer in Shells interface.
This section is available when a temperature-dependent density is used. On the material frame, the density is evaluated onto a reference temperature to ensure mass conservation in the presence of temperature variations. By default the Common model input is used. This corresponds to the variable
minput.Tempref, which is set by default to 293.15 [K]. To edit it, click the
Go to Source button (
), and in the
Common Model Inputs node under
Global Definitions, set a value for the
Volume reference temperature in the
Expression for remaining selection section.
The other options are User defined and all temperature variables from the physics interfaces included in the model.
This section is available when temperature-dependent material properties are used. By default the temperature of the parent interface is used and the section is not editable. To edit the Temperature field, click
Make All Model Inputs Editable (
). The available options are
User defined (default),
Common model input (the
minput.T variable, set to 293.15 [K] by default) and all temperature variables from the physics interfaces included in the model. To edit the
minput.T variable, click the
Go to Source button (
), and in the
Common Model Inputs node under
Global Definitions, set a value for the
Temperature in the
Expression for remaining selection section.
The default Absolute pressure pA is
User defined. When additional physics interfaces are added to the model, the absolute pressure variables defined by these physics interfaces can also be selected from the list. For example, if a
Laminar Flow interface is added you can select
Absolute pressure (spf) from the list. The
Common model input option corresponds to the
minput.pA variable, set to 1 [atm] by default. To edit it, click the
Go to Source button (
), and in the
Common Model Inputs node under
Global Definitions, set a value for the
Pressure in the
Expression for remaining selection section.
The default Velocity field u is
User defined. For
User defined enter values or expressions for the components based on space dimensions. Or select an existing velocity field in the component (for example,
Velocity field (spf) from a
Laminar Flow interface). The
Common model input option corresponds to the
minput.u variable. To edit it, click the
Go to Source button (
), and in the
Common Model Inputs node under
Global Definitions, set values for the
Velocity components in the
Expression for remaining selection section.
The available options for Layer type are
Thermally thin approximation and
General. The former is a lumped model that accounts only for tangential temperature gradients (along the fracture), whereas the latter accounts also for the normal gradients of temperature (through the fracture’s thickness).
By default, the Boundary material is used. The
Volume fraction θfr should be specified. The default is 0.
The default Thermal conductivity kfr is taken
From shell. For
User defined select
Isotropic,
Diagonal,
Symmetric, or
Anisotropic based on the characteristics of the thermal conductivity, and enter another value or expression. Select an
Effective conductivity:
Volume average (the default) or
Power law.
The default Density ρfr and
Specific heat capacity Cp, fr are taken
From shell. See
Material Density in Features Defined in the Material Frame if a temperature-dependent density should be set. For
User defined enter other values or expressions.
More locations are available if the Heat transfer in porous media check box is selected under the
Physical Model section. For example:
Heat Transfer in Solids>Fracture
