Relationships Between Pipe Resistance Formulas

by Walter L. Moore, (A.M.ASCE), Prof. of Civ. Eng.; The Univ. of Texas, Austin, Tex.,

Serial Information: Journal of the Hydraulics Division, 1959, Vol. 85, Issue 3, Pg. 25-41

Document Type: Journal Paper

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Abstract: Relationship between modern concepts of pipe resistance and older empirical formulas is clarified, and simple procedure developed to derive exponential formula applicable to known range of flow conditions; data on resistance measurements in water mains in service indicate that head loss varies with discharge to power nearly equal to 2.0 rather than 1.85 as commonly assumed.

Subject Headings: Head loss (fluid mechanics) | Flow resistance | Pipelines | Flow measurement | Empirical equations | Pipe flow | Water flow | Water discharge measurement

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