Conductivity

Isotropic

Isotropic conductivity describes a material that exhibits no directional dependency for conductivity.


Input Data	Description
Thermal Conductivity	Isotropic conductivity, $k$
Use temperature-dependent data	Specifies material parameters that depend on temperature. A Temperature field appears in the data table. For more information, see Specifying Material Data as a Function of Temperature and Independent Field Variables.
Number of field variables	Specify material parameters that depend on field variables. Field columns appear in the data table for each field variable you add. For more information, see Specifying Material Data as a Function of Temperature and Independent Field Variables.

When you specify orthotropic conductivity, the material exhibits directional dependency limited only in the principal directions.


Input Data	Description
K1, K2, and K3	Value of conductivity in the 1-, 2-, and 3-directions, respectively. For geometry in Cartesian coordinate systems, these directions correspond to the principal axes in the selected axis system. For geometry in cylindrical coordinate systems, K1 describes conductivity in the radial direction, K2 in the theta direction, and K3 in the axial direction.
Use temperature-dependent data	Specifies material parameters that depend on temperature. A Temperature field appears in the data table. For more information, see Specifying Material Data as a Function of Temperature and Independent Field Variables.
Number of field variables	Specify material parameters that depend on field variables. Field columns appear in the data table for each field variable you add. For more information, see Specifying Material Data as a Function of Temperature and Independent Field Variables.

When you specify anisotropic conductivity, the material exhibits full directional dependency. You also need to specify a full symmetric tensor.


Input Data	Description
K11, K12, and K13 K22, K23, and K33	Conductivity values for each anisotropic conductivity value.
Use temperature-dependent data	Specifies material parameters that depend on temperature. A Temperature field appears in the data table. For more information, see Specifying Material Data as a Function of Temperature and Independent Field Variables.
Number of field variables	Specify material parameters that depend on field variables. Field columns appear in the data table for each field variable you add. For more information, see Specifying Material Data as a Function of Temperature and Independent Field Variables.