Hi,

There are many correlations related to heat transfer.

I hope this might be helpful for you.

Hi,

There are many correlations related to heat transfer.

I hope this might be helpful for you.

As you can see from the previous responses, Nusselt number is NOT correlated with Reynolds number for the simple case of fully developed laminar flow in a pipe. This is because the viscous boundary layer thickness remains constant (equal to the radius of the pipe) for all laminar Reynolds numbers. In turbulent flow, the boundary layer gets thinner as Reynolds number increases in the same pipe, thus, the Nusselt number depends on Reynolds number.