nusselt number

If the Nusselt number is about 1, it represents that the heat transfer is conduction only, but if the value is between 1 and 10, then it shows laminar of slug flow. lirik maher zain number one for me If the range is more, it is active convection with turbulence in the 100–1000 range Nusselt number on the other hand is a non-dimensional heat transfer coefficient