Lateral Outflow Over Side Weirs
Publication: Journal of Hydraulic Engineering
Volume 113, Issue 4
Abstract
The lateral outflow mechanism of side weirs is investigated using a one‐dimensional approach. In particular, the effects of flow depth, approaching velocity, lateral outflow direction and side weir channel shape are included, resulting in expressions for the lateral outflow angle and the lateral discharge intensity. For vanishing channel velocity, the conventional weir formula for plane flow conditions is reproduced. However, for increasing local Froude number, the lateral outflow intensity decreases under otherwise fixed flow parameters. A comparison of the theoretically determined solution with observations indicates a fair agreement. The results are then applied to open channel bifurcations by considering a side‐weir of zero weir height. Distinction between sub‐ and supercritical flow conditions is made. Again, the computed results compare well with the observations and allow a simple prediction of all pertinent flow characteristics.
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References
1.
Coulomb, R., de Saint Martin, J. M., and Nougaro, J., “Etude théorique de la répartition du débit le long d'un déversoir latéral,” Le Génie Civil, Vol. 144, 1967, 4, 311–316.
2.
Favre, H., “Contribution à l'etude des courants liquides,” Rascher et Cie, Zürich, 1933.
3.
Hager, W. H., “Die Hydraulik von Verteilkanaelen,” thesis presented at the Federal Institute of Technology, at Zürich, in 1981, in partial fulfillment of the requirements for the degree of Master of Science.
4.
Hager, W. H., and Hager, K., “Streamline Curvature Effects in Distribution Channels,” Proc. Institution Mechanical Engineers, Vol. 199, C3, 1985, 165–172.
5.
Hager, W. H., and Volkert, P. U., “Distribution Channels,” Journal of Hydraulic Engineering, ASCE, Vol. 112, No. 10, 1986, 935–952.
6.
Kandaswamy, P. K., and Rouse, H., “Characteristics of flow over terminal weirs and sills,” Journal of the Hydraulics Division, ASCE, Vol. 83, No. 4, 1957, 1–13.
7.
Kosinsky, de, V., “Etude expérimentale de déversoirs latéraux,” Revue Universelle des Mines, 1968, 199–211.
8.
Nadesamoorthy, T., and Thomson, A., Discussion of “Spatially Varied Flow over Side Weirs,” by Subramanya, K. and Awasthy, S. C., Journal of the Hydraulics Division, ASCE, Vol. 98, No. 12, 1972, 2234–2235.
9.
Ramamurthy, A. S., and Carballada, L., “Lateral Weir Flow Model,” Journal of the Irrigation and Drainage Division, ASCE, Vol. 106, No. 1, 1980, 9–25.
10.
Ranga Raju, K. G., Prasad, B., and Gupta, S. K., “Side Weir in Rectangular Channel,” Journal of the Hydraulics Division, ASCE, Vol. 105, No. 5, 1979, 547–554.
11.
Subramanya, K., and Awasthy, S. C., “Spatially Varied Flow over Side Weirs,” Journal of the Hydraulics Division, ASCE, Vol. 98, No. 1, 1972, 1–10.
12.
Yen, B. C., and Wenzel, H. G., “Dynamic Equations for Steady Spatially Varied Flow,” Journal of the Hydraulics Division, ASCE, Vol. 96, No. 3, 1970, 801–814.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 113 • Issue 4 • April 1987
Pages: 491 - 504
Copyright
Copyright © 1987 ASCE.
History
Published online: Apr 1, 1987
Published in print: Apr 1987
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