Friction Factors for Small Diameter Plastic Pipes
Publication: Journal of Hydraulic Engineering
Volume 115, Issue 2
Abstract
Friction loss data were collected for three small diameter plastic pipe sections. Analysis of the data confirmed that the Blasius equation is a very accurate predictor of the friction factor when Reynolds numbers are less than 100,000. The theoretical basis for a power‐law relationship of the friction factor to Reynolds number is discussed, and the agreement of the l/7th power law with the Blasius exponent is pointed out. A combination of the Blasius and Colebrook‐White equations is proposed as a convenient and accurate head loss prediction equation. The combination equation is dimensionally homogeneous, correctable for viscosity changes, and accurate for small diameter plastic pipe as it is normally used.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 115 • Issue 2 • February 1989
Pages: 183 - 192
Copyright
Copyright © 1989 ASCE.
History
Published online: Feb 1, 1989
Published in print: Feb 1989
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