Research Article
Mar 1970
Vertical Transfer in Open Channel Flow
Publication: Journal of the Hydraulics Division
Volume 96, Issue 3
Abstract
Vertical turbulent mass transfer coefficients for suspended sediment particles and dye, and fall velocities of the sediment particles were determined experimentally in a large laboratory flume. Local values of the turbulent mass transfer coefficient, and turbulent fall velocities for the sand, were determined from an integrated form of the transfer equation. The results of the experiments indicate that: (1) Magnitude and distribution of the vertical turbulent mass transfer coefficient for dye and fine sediment are close to those of the momentum transfer coefficient, which lends added support to Reynolds' analogy for the equivalence of mass and momentum transfer in turbulent shear flow; (2) in comparison with dye, the mass transfer coefficient for medium sand is somewhat less in magnitude and its distribution indicates that the transfer coefficient is larger near the bed; and (3) the fall velocity of sediment particles is larger in turbulent channel flow than in quiescent water.
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Published In
Journal of the Hydraulics Division
Volume 96 • Issue 3 • March 1970
Pages: 703 - 724
Copyright
© 1970 American Society of Civil Engineers.
History
Published in print: Mar 1970
Published online: Feb 3, 2021
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Authors
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Harvey E. Jobson, AM.ASCE
Res. Hydr. Engr., U.S. Geological Survey, Fort Collins, C. O
William W. Sayre, M.ASCE
Res. Engr., Inst. of Hydr. Res., and Assoc. Prof., Dept. of Mech. and Hydr., The Univ. of Iowa, Iowa City, I. A
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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.