Has anyone seen a flow study where the average temperature would be something that is expected, but the maximum temperature is completely unrealistic. Recent studies I've run have had average temperatures at 80C, or less in most cases, but as high as 2700C. No, that is not an extra zero. There isn't any possible way a 13W volume heat source can heat up a metal can (in this case the air around it) to 2700C, so what is wrong with my setup?
Here are my settings for the internal study
Heat conduction in solids, checked
Exclude cavities without flow conditions, unchecked
Fluids (gases), Air
Flow type, laminar and turbulent
Default solid, Insulator
Default outer wall, Heat transfer coefficient, 5.5 W/m^2/K
Temperature of external fluid, 24.05C
Initial conditions, pressure 14.6959473 lbf/in^2, pressure potential checked, temperature, 24.05C
Initial Mesh, Default
All solid bodies had material assigned. Mild steel was assigned to the metal can, electronics (PCB material assigned) are inside the metal can, inside a ventilated ABS plastic housing.
Those are the settings. If anyone has any ideas please let me know.
FYI - file is too big to attach