What is external flow
In fluid mechanics, external flow is such a flow that boundary layers develop freely, without constraints imposed by adjacent surfaces. Accordingly, there will always exist a region of the flow outside the boundary layer in which velocity, temperature, and/or concentration gradients are negligible. It can be defined as the flow of a fluid around a body that is completely submerged in it.
An example includes fluid motion over a flat plate (inclined or parallel to the free stream velocity) and flow over curved surfaces such as a sphere, cylinder, airfoil, or turbine blade, air flowing around an airplane and water flowing around the submarines.
How to Calculate Nusselt number at location L?
Nusselt number at location L calculator uses Nusselt Number(l) = Average Nusselt Number/2 to calculate the Nusselt Number(l), The Nusselt number at location L formula is defined as the ratio between heat transfer by convection (α) and heat transfer by conduction alone. Nusselt Number(l) is denoted by NuL symbol.
How to calculate Nusselt number at location L using this online calculator? To use this online calculator for Nusselt number at location L, enter Average Nusselt Number (NuavgL) and hit the calculate button. Here is how the Nusselt number at location L calculation can be explained with given input values -> 16 = 32/2.