Heat Transfer Analysis - Some noods seem to have an inadequate temperature

[Alexander Koss]

Dear Forum,

In my heat transfer analysis of a rather large model there are nodes, that seem to go down to very low temperatures (around -230°C), although everything in the model is 35°C and above, just like the environment. What could be the issue?

 

[FEA way]

Check all initial and boundary conditions and make sure that units are consistent. But most importantly, refine the mesh. Too coarse discretization may lead to such numerical errors.