TECHNICAL PAPERS
Feb 1, 1989

Transitional Flow in Channel Junctions

Publication: Journal of Hydraulic Engineering
Volume 115, Issue 2

Abstract

Combining open channel flow in rectangular channels of equal width is considered for transitions from sub‐ to supercritical flow. The upstream water level is determined by a one‐dimensional approach. Using appropriate observations, the solution is checked with experimental data and modifications proposed. It is shown that transitional flow can only exist if the lateral discharge is at least 15% of the total discharge. Furthermore, detailed measurements of the velocity field are presented. Finally, recommendations are given which allow a straightforward hydraulic design.

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References

1.
Best, J. L., and Reid, I. (1984). “Separation zone at open‐channel junctions.” J. Hydr. Engrg., ASCE, 110(11), 1588–1594.
2.
Best, J. L., and Reid, I. (1987). Closure to “Separation zone at open‐channel junctions.” J. Hydr. Engrg., ASCE, 113(4), 545–548.
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Hager, W. H. (1987). Discussion of “Separation zone at open‐channel junctions,” by J. L. Best and I. Reid, J. Hdr. Engrg., ASCE, 113(4), 539–543.
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Go to Journal of Hydraulic Engineering
Journal of Hydraulic Engineering
Volume 115Issue 2February 1989
Pages: 243 - 259

History

Published online: Feb 1, 1989
Published in print: Feb 1989

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Authors

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Willi H. Hager, Member, ASCE
Sr. Res. Engr., Laboratoire de Constructions Hydrauliques, LCH, Dép. de Génie Civil, DGC, Ecole Polytechnique Fédérale de Lausanne, EPFL, CH‐1015 Lausanne, Switzerland

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