I have a circuit board that works quite well (processor, screen, power supply). It has been tested successfully for an open aluminium enclosure, but now it will need to fit a rugged 100% closed box.
I know that some people use simulations or excel tables to estimate the power, heat, volume, dissipation and element layout.
What would be the right way/process to design a such enclosure?
is there any software or other tool to optimise thermal performance?
I feel like we do it mostly by trial and error and experience only, and would like to have more elements to have success with less iterations.