Viscous Flow in Pipes.pdf
Viscous Flow in Pipes.pdf
Viscous Flow in Pipes.pdf
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Orig<strong>in</strong> of shear stress• The shear stress for turbulent flow can not be evaluatedas for lam<strong>in</strong>ar flow, i.e.,τt≠uμ ∂∂y• Lam<strong>in</strong>ar flow : random Turbulent flow: randommotion of molecules. motion of 3D eddies.The eddystructuregreatlyenhancesand promotesmix<strong>in</strong>g with<strong>in</strong>the fluid.