Solutions for Lateral Inflow in Perforated Conduits
Publication: Journal of Hydraulic Engineering
Volume 113, Issue 9
Abstract
A one‐dimensional model for a steady inflow of a Newtonian, incompressible fluid to a horizontal pipe perforated with circular orifices along the entire length is considered. Experiments show that perforated pipes have a greater equivalent sand roughness height of the wall compared to nonperforated pipes. At a certain spacing of the orifices, the Darcy‐Weisbach friction factor depends on the Reynolds number, wall permeability, and wall roughness height. In some cases the friction factor in perforated pipes was found to be 80% higher than in nonperforated pipes. The equation of motion includes both the effect of the discontinuity of inflow along the perforated pipe and the effect of the lateral inflow angle on the total energy loss in the main stream. The maximum value of the coefficient which describes this influence, is 0.77 and is lower than the theoretical maximum value 1.0.
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Published In
Journal of Hydraulic Engineering
Volume 113 • Issue 9 • September 1987
Pages: 1117 - 1132
Copyright
Copyright © 1987 ASCE.
History
Published online: Sep 1, 1987
Published in print: Sep 1987
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