Research Article
Jun 1974
Enhanced Dispersion in Drag Reducing Open Channel Flow
Authors: Jerald P. Peterson, Walter E. Castro, Paul B. Zielinski, M.ASCE, and William F. BeckwithAuthor Affiliations
Publication: Journal of the Hydraulics Division
Volume 100, Issue 6
Abstract
Results are presented concerning the effect of high polymer drag reducing additives on turbulent dispersion in open channel flow. Theoretical analysis shows that the dispersion coefficient should be greatly enhanced in a drag reducing flow. The data obtained for the longitudinal turbulent dispersion coefficient increases with increasing polymer concentration for dilute polymer solutions at a given Reynolds number. The data for the flow of water and dilute polymer solutions show that the dispersion coefficient varies linearly with the Reynolds number for each concentration. Above a Reynolds number of 10,000, the dispersion coefficient could be predicted from theoretical equations with a single empirical constant.
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Published In
Journal of the Hydraulics Division
Volume 100 • Issue 6 • June 1974
Pages: 773 - 785
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Jun 1974
Published online: Feb 3, 2021
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Authors
Affiliations
Jerald P. Peterson
Sr. Research Engr., Hercules, Inc., Cumberland, Md.; formerly Grad. student of Dept. of Chemical Engrg., Clemson Univ., Clemson, S.C.
Walter E. Castro
Prof. of Mech. Engrg., Clemson Univ., Clemson, S.C.
Paul B. Zielinski, M.ASCE
Assoc. Prof. of Civ. Engrg., Clemson Univ., Clemson, S.C.
William F. Beckwith
Assoc. Prof. of Chemical Engrg., Clemson Univ., Clemson, S.C.
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