For laminar flow in a pipe, wall shear stress ( 0 ) causes the velocity distribution to
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For laminar flow in a pipe, wall shear stress (τ0) causes the velocity distribution to change from uniform to parabolic as shown. At the fully developed section, the velocity profile is u = umax[1 – (r/r0)2]. Derive a formula for the force on the wall due to shear stress, Fτ, between 1 and 2 as a function of U (the mean velocity in the pipe), ρ, p1, p2, and D (the pipe diameter).
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(1) to ro 2
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The force on the wall due to shear stress F between 1 and 2 can be derived as follows First the wall ...View the full answer
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Related Book For
Engineering Fluid Mechanics
ISBN: 9781118880685
11th Edition
Authors: Donald F. Elger, Barbara A. LeBret, Clayton T. Crowe, John A. Robertson
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