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 Plate surface temperature?
Plate surface temperature calculator uses Plate Surface Temperature = 2*Film temperature-Free Stream Fluid Temperature to calculate the Plate Surface Temperature, Plate surface temperature formula is defined as the temperature at the surface of a plate in a fluid flow, which is a critical parameter in heat transfer and fluid dynamics, particularly in the context of flow over a flat plate. Plate Surface Temperature is denoted by Tw symbol.
How to calculate Plate surface temperature using this online calculator? To use this online calculator for Plate surface temperature, enter Film temperature (Tf) & Free Stream Fluid Temperature (T∞) and hit the calculate button. Here is how the Plate surface temperature calculation can be explained with given input values -> -243.15 = 2*323.15-343.15.