TECHNICAL NOTES
Oct 1, 1990
Velocity and Depth of Flow Calculations in Partially Filled Pipes
Author: A. SaatciAuthor Affiliations
Publication: Journal of Environmental Engineering
Volume 116, Issue 6
Abstract
Nomographs and tables are used to facilitate the application of Manning's equation for different flow conditions and pipe materials. Different computer programs are also used to avoid the laborious calculations required to find the optimum and economic design. There is no exact algebraic solution for the calculation of the depth of flow in a partially filled pipe when its diameter, slope, and flow rate are known. Therefore, iterative methods are applied to calculate the depth of flow. In this paper, a simple algebraic equation is proposed that will facilitate the calculation of the water surface angle and thus the depth of flow when the diameter, slope of the energy grade line, and the flow rate are known in partially filled pipes. The equation is valid for water surface angles less than or equal to 265°. The application of the proposed equation is illustrated by calculating the flow area, depth of flow, and velocity in a gravity-sewer example problem.
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Reference
1.
Escritt, L. B, (1984). Sewerage and sewage treatment—International practice. John Wiley and Sons, Inc., New York, N.Y.
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Copyright © 1990 ASCE.
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Published online: Oct 1, 1990
Published in print: Oct 1990
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A. Saatci
Assoc. Prof., Chmn., Dept. of Envir. Engrg., Fac. of Engrg., Marmara Univ., Fikirtepe Kampusu, Kadiköy 81040, Istanbul, Turkey
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.