Reply To: How to define thermal conductivity K(T(t)), which is a function of temperature ‘T(time)’ in APDL?

[dlooman]

The MPTEMP and MPDATA commands can be used to specify a temperature dependent thermal conductivity. ESTIF can be used to lower the thermal conductivity of dead elements. I would never specify such a small number as 1e-30 though. It could produce ill-conditioning. 1e-12 should be small enough. The temperature change in the dead elements may not be due to thermal conductivity. It may be necessary to constrain the nodes of dead elements to a temperature. (Only nodes that aren't shared with live elements.)