I would like to specify orthotropic thermal conductivity in a solid domain using CFX.




Please note that this approach works only if all solid interfaces are 1-1.

To use Orthotropic Thermal Conductivity you need to edit the CCL definition of a material, you cannot set this up using the GUI as of CFX-10.
Change the following CCL in the required material:

From:

THERMAL CONDUCTIVITY :
Option = Value
Thermal Conductivity = ` [W m^-1 K^-1]
END

To:

THERMAL CONDUCTIVITY :
Option = Orthotropic Cartesian Components
Thermal Conductivity X Component = `. [W m^-1 K^-1]
Thermal Conductivity Y Component = ` [W m^-1 K^-1]
Thermal Conductivity Z Component = `. [W m^-1 K^-1]
END

You can also use a cylindrical coordinate frame if necessary or create your own Cartesian/cylindrical frame if your geometry does not line up with the default axes.
Please search the online help for Orthotropic to obtain additional details.





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