The head loss due to flow of a fluid inside a pipe is calculated from .L V? D 2g h Loss where Loss f = friction factor L = pipe length (m) D = pipe diameter (m) V = average flow velocity (m/s) g = acceleration due to gravity (m/s²) What is the appropriate unit for friction factor f?

The head loss due to flow of a fluid inside a pipe is calculated from .L V? D 2g h Loss where Loss f = friction factor L = pipe length (m) D = pipe diameter (m) V = average flow velocity (m/s) g = acceleration due to gravity (m/s²) What is the appropriate unit for friction factor f?

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter6: Fundamental Dimensions And Units

Section: Chapter Questions

Problem 49P

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Concept explainers

Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.

Question

For Problem 6.49, h_Loss is expressed in feet, L and D in inches, V in (ft/s), and g in (ft/s² ). What is the appropriate unit for the friction factor f?

The head loss due to flow of a fluid inside a
pipe is calculated from
.L V?
D 2g
h Loss
where
Loss
f = friction factor
L = pipe length (m)
D = pipe diameter (m)
V = average flow velocity (m/s)
g = acceleration due to gravity (m/s²)
What is the appropriate unit for friction
factor f?

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