When water at 20C ( = 998 kg/m3, = 0.001 kg/ms) flows through an 8-cmdiameter pipe, the

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When water at 20°C (ρ = 998 kg/m3, μ = 0.001 kg/m⋅s) flows through an 8-cmdiameter pipe, the wall shear stress is 72 Pa. What is the axial pressure gradient (∂ p/∂ x) if the pipe is (a) horizontal; and (b) vertical with the flow up?

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Fundamentals of Thermal-Fluid Sciences

ISBN: 978-0078027680

5th edition

Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala

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Question Posted: Jan 15, 2010 02:40 AM

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When water at 20C ( = 998 kg/m3, = 0.001 kg/ms) flows through an 8-cmdiameter pipe, the

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Equation 69b applies in both cases ...View the full answer

Fundamentals of Thermal-Fluid Sciences

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