I’m running a transient thermal simulation on ANSYS mechanical. My problem is thus follows:

I set the initial temperature conditions of a couple of (solid geometry) named groups to -253.15degC using:

Commands (APDL) à

IC, [NAMED GROUP],Temp,-253.15

But when I run my simulation there are elements within these named groups which begin at temperatures lower than the value which I put in (-331.51degC to be exact). What am I doing to cause this and how can it be prevented?