How do I specify a non-uniform conductivity to my blocks or plates?
You may do this by modifying the conductivity values in "Model/Materials".
Solids materials can have Isotropic, Orthotropic or Anisotropic conductivities.
Isotropic solids have uniform conductivities in all directions.
Orthotropic materials can have different conductivities in X, Y, and Z directions.
The conductivity of Anisotropic materials is defined by a nine component tensor.
So, depending on the complexity of your materials, you can choose either Orthotropic or Anisotropic options for your materials.
For additional information, refer following section:
Icepak 12.1 User Guide -> Building a Model -> Material Properties