Sinde you will most likely need CFD with heat transfer (CHT) anyway, I would ask here: https://forum.freecad.org/viewforum.php?f=37
Also see this thread: How to do a thermal analysis?
Sinde you will most likely need CFD with heat transfer (CHT) anyway, I would ask here: https://forum.freecad.org/viewforum.php?f=37
Also see this thread: How to do a thermal analysis?