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In Natural Fluid Convection becomes dependant on Rayleigh number 

LaTeX Math Inline
body\rm Ra
 and Prandtl number 
LaTeX Math Inline
body\rm Pr
.

 Churchill and Chu correlation which works with

LaTeX Math Inline
body--uriencoded--Ra \leq 10%5e8
:

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anchor4VZDP
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{\rm Nu}=3.66 ... 0.68 + \frac{0.6633 \, Ra^{1/4}}{ 1+ (0.492/Pr)^{4/9}}


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qwe


See also

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Physics / Thermodynamics / Heat Transfer

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