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Radiation plus free convection in enclosed volume

Question asked by Ron Reis on Nov 10, 2011
Latest reply on Jan 10, 2012 by Grant Smith

I have a radome with electronics inside.  At altitude the film coefficient for free convection gets very low, and I am sure that radiation starts to have a bigger impact on overall heat transfer.  However, when I try to use radiation the results get very strange -- i.e., inside temps lower than the skin temp of the radome.  Any thoughts on how to include radiation without getting obviously incorrect results?

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