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Infinite atmosphere

Question asked by Justin Broughton on Jul 23, 2013
Latest reply on Jul 23, 2013 by Jared Conway

Doing a thermal model of a PCB.
Trying to see what it's maximum temperature will be.
I put the PCB in a 1 foot by 1 foot box of air.
This causes the air to heat up to almost 70 degrees celsius.
How do I model the air around the PCB to be, for all intents and purposes, infinite?