Research Article
Jan 1973
Shape Effects on Resistance in Flood-Plain Channels
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 99, Issue 1
Abstract
For flow computation in flood plain channels, the flow cross section is usually divided into subsections to ensure hydraulic homogeneity. However, the question of whether or not to include the division lines as part of the wetted perimeter still remains unanswered. In this study, efforts have been made to determine division lines having zero shear stress so that they need not be included in the wetted perimeter. Laminar flow cases were solved to gain qualitative insight into the shape effects on resistance and location of division lines. For turbulent flows, division lines were determined from velocity distribution patterns; and resistance coefficients for both laminar and turbulent flows are lower than those in wide rectangular channels having the same boundary materials. New formulas are proposed for computation of discharge in both main-channel and flood-plain portions.
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Published In
Journal of the Hydraulics Division
Volume 99 • Issue 1 • January 1973
Pages: 219 - 238
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: Jan 1973
Published online: Feb 3, 2021
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Authors
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Chin-lien Yen, AM.ASCE
Assoc. Prof., Dept. of Civ. Engrg., Howard Univ., Washington, D.C., and Research Hydr. Engr. (Intermittent), USDA Hydrograph Lab., Beltsville, Md
Donald E. Overton, AM.ASCE
Research Hydr. Engr., USDA Hydrograph Lab., Soil and Water Conservation Research Div., USDA-ARS, Beltsville, Md
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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.