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Nusselt NumberThe Nusselt number is a dimensionless number which measures the enhancement of heat transfer from a surface which occurs in a 'real' situation, compared to the heat transfer that would be measured if only conduction could occur. Typically it is used to measure the enhancement of heat transfer when convection takes place. -
where The Nusselt number can also be viewed as being a dimensionless temperature gradient at the surface.
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