Research Article
Aug 1978
Three-Dimensional Open Channel Flow
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VIEW THE REPLYAuthors: Chao-Lin Chiu, M.ASCE, Hsin-Chi Lin, and David E. HsiungAuthor Affiliations
Publication: Journal of the Hydraulics Division
Volume 104, Issue 8
Abstract
An open channel flow is usually three-dimensional consisting of the primary and secondary flows. The primary flow is defined herein as the flow component in the longitudinal direction of the channel, while the secondary flow includes the remaining flow components in the vertical and transverse directions of the channel. In an alluvial channel the channel cross sections and, thus, the three-dimensional flow structure vary irregularly or randomly along the flow. A technique has been developed and presented herein that can be used to compute secondary currents and, thus, the irregular three-dimensional structure of open channel flow. The technique uses analytical, hydrodynamic equations along with measured data of channel geometry and primary flow velocity distribution. Illustrative examples are presented with results of practical applications of the technique, describing the variability of the direction and magnitude of secondary currents with time, space, and discharge rate.
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Published In
Journal of the Hydraulics Division
Volume 104 • Issue 8 • August 1978
Pages: 1119 - 1136
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: Aug 1978
Published online: Feb 3, 2021
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Authors
Affiliations
Chao-Lin Chiu, M.ASCE
Prof. of Civ. Engrg., Univ. of Pittsburgh, Pittsburgh, Pa.
Hsin-Chi Lin
Research Asst.; Dept. of Civ. Engrg., Univ. of Pittsburgh, Pittsburgh, Pa.
David E. Hsiung
Engr., Bernard Johnson, Inc., Washington, D.C.; formerly, Research Asst., Dept. of Civ. Engrg., Univ. of Pittsburgh, Pittsburgh, Pa.
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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.