Research Article
May 1982
Mathematical Model for Erodible Channels
Publication: Journal of the Hydraulics Division
Volume 108, Issue 5
Abstract
A mathematical model for erodible channels is formulated, developed and tested with field data. A significant feature of the model is its ability to account for changes in both channel width and channel-bed profile of aggrading and degrading streams. Since changes in channel width and channel-bed elevation are closely interrelated, this model represents an improvement in this direction. This model employs the techniQues for water and sediment routing; an additional condition based upon the concept of minimum stream power is used as the width predictor. Analysis using this model shows that the total stream power of a reach is reduced if the widths at all cross-sections are so adjusted as to reduce the variation in energy gradients at these sections. When this model is applied, a varied flow will eventually develop into a uniform flow for which the stream power is an eventual minimum.
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Published In
Journal of the Hydraulics Division
Volume 108 • Issue 5 • May 1982
Pages: 678 - 689
Copyright
© 1982 American Society of Civil Engineers.
History
Published in print: May 1982
Published online: Feb 3, 2021
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Authors
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Howard H. Chang, M.ASCE
Prof. of Civ. Engrg., San Diego State Univ., San Diego, Calif.
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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.