Air is flowing naturally over a cylinder of D=(15) cm. Air has thermal conductivity 0.027 W/mK, kinematic viscosity 1.9*10-5 m2 /s, Rayleigh number 108 , and Prandtl number 0.72. Find the Nusselt number

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Q: Air is flowing naturally over a cylinder of D=(1) cm. Air has thermal conductivity 0.027 W/mK,…

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.