The wall shear stress in a fully developed flow portion of a 18-in.-diameter pipe carrying water is 2.00 lb/ft2. Determine the pressure gradient, ap/ax, where x is in the flow direction, if the pipe is (a) horizontal, (b) vertical with flow up, or (c) vertical with flow down. (a) Əp/ax = (b) др/дх= i IM (c) Əp/Əx = i lb/ft3 lb/ft3 lb/ft³

The wall shear stress in a fully developed flow portion of a 18-in.-diameter pipe carrying water is 2.00 lb/ft2. Determine the pressure gradient, ap/ax, where x is in the flow direction, if the pipe is (a) horizontal, (b) vertical with flow up, or (c) vertical with flow down. (a) Əp/ax = (b) др/дх= i IM (c) Əp/Əx = i lb/ft3 lb/ft3 lb/ft³

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Metrology of surface finish

In general terms, the application of scientific principles in the study of measurements is known as metrology. When speaking about measurement, it could be of time, length, microstructures, grain structures, internal crystal discontinuities, surface roughness, measurements of angles, height, width, and so on. While coming to the domain of mechanical engineering, metrology is considered the science of measurements of surface finish, length, surface texture, and angles.

Question

The wall shear stress in a fully developed flow portion of a 18-in.-diameter pipe carrying water is 2.00 lb/ft2. Determine the pressure
gradient, ap/ax, where x is in the flow direction, if the pipe is (a) horizontal, (b) vertical with flow up, or (c) vertical with flow down.
(a) Əp/ax =
(b) др/дх=
i
IM
(c) Əp/Əx = i
lb/ft3
lb/ft3
lb/ft³

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Step 2: Write the general expression for wall shear stress

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Step 3: Calculate the gradient for horizontal pipe

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Step 4: Calculate the gradient for vertical pipe,flow up

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Step 5: Calculate the pressure gradient for vertical pipe ,flow down

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