World Environmental and Water Resources Congress 2020
Characteristics of Hydraulic Jumps in Stilling Basins with Permeable Six-Legged Elements
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VIEW CORRECTIONPublication: World Environmental and Water Resources Congress 2020: Hydraulics, Waterways, and Water Distribution Systems Analysis
ABSTRACT
A stilling basin, is often optimized in dimensions based on the characteristics of hydraulic jumps formed within the basin. Many types of energy dissipators are used to shorten the jump-length and hence, reducing the length of basin. A study was conducted to investigate the effectiveness of six-legged concrete (SLC) elements as dissipators. Models of these elements were placed on the bed of an experimental flume downstream of a spillway chute in different densities of the SLC elements. The incoming flow had Froude number in the range of 5.3 to 8.1. The results indicate that the greatest reduction of sequent depth ratio and dimensionless length of jump occur when the density of elements is 36%. The average reduction of hydraulic jump length on the roughened bed for densities of 36%, 63%, and 100% is 29% and at 23% and 17%, respectively, in comparison with the smooth bed.
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ACKNOWLEDGEMENT
This paper is based largely on the thesis work of the first and third authors submitted to the Department of Hydraulic Structure of Shahid Chamran University. Financial support received from the university vice-chancellor of research is gratefully appreciated.
REFERENCES
Abdelhaleem, Fahmy S. A. A., Helal, YE. (2012). "Effect of corrugated bed shapes on hydraulic jump and downstream local scour." Journal of American Science 8(5): 1-10.
Aboulatta, N. (1986). Study of the effect of location and length of roughened beds on flow characteristics in stilling basins. M.Sc., Ain Shams University, Cairo, Egypt.
AboulAtta, N., Ezizah, G., Yousif, N. and Fathy, S. (2011). "Design of stilling basin artificial roughness." International Journal Civil and Environmental Engineering 3(2): 65-71.
Alhamid, A. A. (1994). "Effective roughness on horizontal rectangular stilling basins." Transactions on Ecology and the Environment 8: 39-46.
Ead, S., Rajaratnam, N. (2002). "Open channel hydraulics." Journal of Hydraulic Engineering ASCE 128: 656-663.
El-Azizi, I. (1985). A study of submerged hydraulic jump stilling basins of low head irrigation structures. M.Sc., Ain Shams University, Egypt.
Ezizah, G. Y., N. Mostafa, S. (2012). "Hydraulic jumps in new roughened beds." Asian Journal of Applied Science 5(3): 96–106.
Hager, W. H. (1992). Energy dissipaters and hydraulic jump, Kluwer Academic, Netherland.
McCorquodale, J. A. (1986). Chapter 8: Hydraulic jumps and internal flows. In: Encyclopedia of FluidMechanics. N.P. Cheremisionoff, (Ed.). Houston, GulfPublishing.
Negm, A. M., E.-T. A. I., Abdellateef, M., and Owais, T. M., (1993). "Optimum floor downstream hydraulic structures with staggered roughness elements." scientific bulletin, Faculty of Engineering, Ain Shams University, Cairo, Egypt 28(1): 301-314.
Peterka, A. (1958). Hydraulic design of stilling basins and energy dissipaters engineering monograph Denver Colorado, U.S. Bureau of Reclamation.
Rajaratnam, N. (1967). Hydraulic jumps. In: Advances in hydroscience Ven Te Chow.
Rajaratnam, N. (1968). "Hydraulic jump on rough bed." Trans Eng Inst Canada 11(2): 1-8.
Shafai Bejestan, M. and Neisi, K. A. (2009). "New roughened bed hydraulic jump stilling basin." Asian Journal of Applied Science 2: 436-445.
Sholichin, M., Akib, S. (2011). "Development of drop number performance for estimate hydraulic jump on vertical and sloped drop structure." International Journal of the Physical Sciences 5(11): 1678–1187.
Tokyay Evcimen, TU, S. C. (2011). "Forced hydraulic jump on non-protruding rough beds." Canadian Journal of Civil Engineering 38(10): 1136-1144.
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Published In
World Environmental and Water Resources Congress 2020: Hydraulics, Waterways, and Water Distribution Systems Analysis
Pages: 65 - 75
Editors: Sajjad Ahmad, Ph.D., and Regan Murray, Ph.D.
ISBN (Online): 978-0-7844-8297-1
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© 2020 American Society of Civil Engineers.
History
Published online: May 14, 2020
Published in print: May 14, 2020
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