This page calculates the heat transfer coefficient,
convected and heat radiated from an isothermal horizontal cylinder assuming natural convection. The
convection calculation is based on Rayleigh number and is valid for Rayleigh
numbers between 10-5 and 1012. The ends of the cylinder
are assumed to be adiabatic.
Define the channel size, cylinder temperature and ambient air fluid
temperature. You also need to define the fluid properties. This page will calculate a heat
transfer coefficient based on the flow conditions as well as the heat
convected from the cylinder.
To account for convection only, make the emissivity
equal to 0. Similarly, to account for radiation only, make the tehrmal
conductivity = 0.
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