Unformatted text preview: 3 A smooth, 50 mm diameter pipe carries water (65 o C) horizontally. When the mass flow rate is 0.075 kg/s, the pressure drop is measured to be 7.5 Pa per 100 m of pipe. Based on these measurements, what is the friction factor? What is the Reynolds number? Does this Reynolds number generally indicate laminar or turbulent flow? Is the flow actually laminar or turbulent? 4. The Moody diagram gives the Darcy friction factor, f, in terms of the Reynolds number and relative roughness. The Fanning friction factor for pipe flow is defines as 2 2 1 V C w F = where w is the wall shear stress in the pipe. Show that the relation between the Darcy and Fanning friction factors for fully developed pipe flow is given by f = 4 C F ....
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- Fall '08
- Fluid Dynamics, volume flow rate, friction factor