Question

What is the difference between thermal boundary layer and velocity boundary layer

Answer 1

Right at the fluid-surface interface,heat transfer occurs only through conduction. The thickness of thethermal boundary layer is defined as that point at which the temperature difference between the fluid and surface is 99% of the temperature difference between the free stream fluid and the surface.

Answer 2

Explanation:

Right at the fluid-surface interface,heat transfer occurs only through conduction. The thickness of thethermal boundary layer is defined as that point at which the temperature difference between the fluid and surface is 99% of the temperature difference between the free stream fluid and the surface.