Design of Rectangular Open‐Channel Expansion Transitions
Publication: Journal of Irrigation and Drainage Engineering
Volume 117, Issue 6
Abstract
Transitions form a vital link in the canals constructed for irrigation and power‐generation purposes. As expansive transitions involve considerable head loss, any reduction of head loss will mean more power generation at the downstream end for power channels and increase in command area for irrigation canals. Furthermore, the minimum head loss design will increase the life of the transition structure. The design methods in vogue are arbitrary with no attention paid to minimizing the energy loss. Based on optimal control theory, a methodology has been presented for optimal design of a rectangular subcritical expansive transition. Analyzing a large number of optimal profiles, an equation for the design of rectangular transitions is presented.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Chaturvedi, R. S. (1963). “Expansive subcritical flow in open channel transitions.” J. Inst. of Engrs., India, 43(9), 447–487.
2.
“Friction factors in open channels: Progress report of task force on friction factors in open channels.” (1963). J. Hydr. Engrg., ASCE, 89(2), 97–143.
3.
Henderson, F. M. (1966). Open channel flow. The MacMillan Co., New York, N.Y., 236.
4.
Hinds, J. (1928). “The hydraulic design of flume and siphon transitions,” Trans., ASCE, 92, 1423–1429.
5.
Mitra, A. C. (1940). “Report on the model experiments of fluming of bridges on Purva branch.” Technical Memorandum. 9, United Provinces Irrigation Res. Inst., Roorkee, India, 94–98.
6.
Morris, H. M., and Wiggert, J. M. (1972). Applied hydraulics in engineering. Second Ed., The Ronald Press Co., New York, N.Y., 185.
7.
Nashta, C. F., and Garde, R. J. (1988). “Subcritical flow in rigid‐bed open channel expansions.” J. Hydr. Res., 26(1), 49–65.
8.
Sage, A. P., and White, C. C. (1977). Optimal systems control. Second Ed., Prentice‐Hall, Inc., Englewood Cliffs, N.J., 310–315.
Information & Authors
Information
Published In
Copyright
Copyright © 1991 ASCE.
History
Published online: Nov 1, 1991
Published in print: Nov 1991
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.