A new water energy dissipater for efficient energy dissipation and enriching the flow with dissolved oxygen content

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One of the most important problems Egypt is facing nowadays is saving and controlling the limited available quantity of water and its quality for irrigation and other purposes. Such goals may be achieved through different types of diversion head structures across the river and in the entrance of other carrying canals. The construction of diversion head structures, which usually causes many technical problems, should have the objective of solving and overcoming to protect the structure from failure. The main problem occurs downstream. Such structures have the harmful effect of converting the potential energy gained in the upstream side to a kinetic energy in the downstream side. This energy must be dissipated shortly and safely as near as possible to the head structure to avoid its destructive effect. The hydraulic jump is the most effective tool for the dissipation of water energy, accelerating the forming of the hydraulic jump downstream such structures became essential for achieving our main goal. Using energy dissipaters on the soled apron in the downstream side of the structures was the main technique for accelerating the hydraulic jump formation and dissipating great amount of the residual harmful kinetic energy occurring downstream head structures. So early, many researchers investigated different types, shapes, and arrangements of such dissipaters to evaluate its efficiency in dissipating the water energy and accelerating the forming of the hydraulic jump. In fact, in our present study we will try to investigate some other shapes of energy dissipaters, which have not been studied enough, by evaluating its positive technical impact on: (i) percentage value of dissipating kinetic water energy; (ii) percentage value of increasing the dissolved oxygen (DO) content in the irrigation water, and improving its quality. The study is proposed to be held in the irrigation and hydraulic laboratory of the Civil department, Faculty of Engineering, Assiut University, using a movable bed tilting channel 20 m long, 30 cm wide, and 50 cm high, using fourteen types of curved dissipaters with different arrangements as shown in Table 2. It is worth mentioning that, in this first part of our paper, we will introduce a comparative analysis for the efficiency of different types of energy dissipaters available in the literature review. The most effective types of the previously studied dissipaters will be put in a comparison with our new dissipaters from the two above mentioned points of view, and the results will be presented in the second part of this paper later.

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  • Alikhani A. Behrozi-Rad R. Fathi-Moghadam M. 2010 Hydraulic jump in stilling basin with vertical end sill Int. J. Phys. Sci. (IJPS) 5(1): 25-29.

  • Ashour M.A.1979 Aeration of the flow with dissolved oxygen & dissipating water energy in shooting flow PhD. thesis Moscow Institute of Strucutral Engineering.

  • Avery S. Novak P 1978 Oxygen transfer at hydraulic structures J. Hydraul. Eng. 104(11): 1521-1540.

  • Bestawy A. 2013 New shapes of baffle piers used in stilling basins as energy dissipators Asian Trans. Eng. (ATE) 3(1): 1-7.

  • El Baradei S.A. 2013 Saving on energy of and determining the best location of water treatment plant along rivers depending on the effect of broad crested weir on dissolved oxygen concentrations in water J. Clean Energy Technol. 1(3): 202-205.

  • El Baradei S.A. 2011 Effect of free hydraulic jump on dissolved oxygen concentrations in water at different vertical control gate openings ICASTOR Journal of Engineering 14(3): 281-291.

  • El-Gawhary E.L. Soliman M.A. Hamed M.E. Zaghlor Y. 1986 Characteristics of flow near concave obstacles Civil Engineering Research Magazine (CERM) A1-Azhar University 8(1).

  • Eloubaidy A.F Al-Baidhani J.H. Ghazali A.H. 1999 Dissipation of hydraulic energy by curved baffle blocks Pertanika J. Sci. Technol. 7(1): 69-77.

  • Gameson A. 1957 Weirs and aeration of rivers J. Inst. Water Eng. 11(5): 477-490.

  • Habib A.A. 2012 Study of free flow blow vertical sluice gate with positive step in redial stilling basin Egyptian Int. J. Eng. Sci. Technology 15(1).

  • Habib A.A. Abdel-Azim M.A Abd-Allh Y.M. Saleh Y.K. 2012 Estimation of hydraulic jump characteristics in stilling basin with guide walls J. Eng. Sci. (JES) Assiut University 40(6):1599-1609.

  • Habib A.A. Abdel-Aal G.M. Negm A.M. Owais T.M. 2003 Theoretical modeling of hydraulic jumps in radial stilling basins ended with sills Proc. of the 7th Int. Water and Technology Conference (IWTC) Cairo: 619-631.

  • [IPCC] Intergovernmental Panel on Climate Change 2007 Observations: Surface and Atmospheric Climate Change [in:] Solomon S. Qin D. Manning M. Chen Z. Marquis M. Averyt K.B. Tignor M. Miller H.L. (eds.) Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change Cambridge Univ. Press Cambridge-New York: 235-336.

  • Kibel P. Coe T. 2009 Castleford mill hydro power proposal. River Aire - fisheries assessment Fishtek Consulting Devon p. 33.

  • Korzun V.I. (ed.) 1978 World water balance and water resources of the earth. Studies and Reports in Hydrology. Vol. 25 Unesco Paris p. 663.

  • Kucukali S. Cokgor S. 2009 Energy concept for predicting hydraulic jump aeration efficiency J. Environ. Eng. 135(2): 105-107.

  • Murthy Y.K. Divatla E. 1982 Behaviour of stilling basins in large spillways Irrigat. Power 39(2).

  • Nakasone H. 1987 Study of aeration at weirs and cascades J. Environ. Eng. 113(1): 64-81.

  • Negm A.M. Abdel-Aal G.M. Habib A.A.Owais T.M. 2003 Effect of end sill in radial basin on characteristics of free hydraulic jumps Proc. of the 1st Int. Conf. of Civil Engineering Science (ICCESI). Vol. 1 Cairo: p. 12.

  • Peterka A.J. 1983 Hydraulic design of stilling basin and energy dissipators Eng. Monograph 25 U.S. Bureau of Reclamation (USBR) Denver p. 221.

  • Rageh O.S. 1999 Effect of baffle blocks on the performance of radial hydraulic jump Proc. of the 4th International Water Technology Conference (IWTC) Alexandria: 255-269.

  • Shahmirzadi M. Sumi T. Kantoush S. 2012 The effect of end-sill geometry on functionality of In-ground stilling basin Annuals Disas. Prev. Res. Inst. Kyoto Univ. 55(2): 561-570.

  • Sutcliffe J.V. Parks Y.P. 1999 The hydrology of the Nile IAHS Special Publication No. 5 IAHS Press Wallingford p. 179.

  • Tiwari H.L Goel A. Gahlot V.K. 2011 Experimental study of effect of end sill on stilling basin performance Int. J. Eng. Sci.Technol. (IJEST) 3(4): 3134-3140.

  • Wafaie E.M. 2001a Optimum height for bed sills in stilling basins Bull. Faculty Eng. Assiut University 29(1): 1-12.

  • Wafaie E.M. 2001b Optimum location for bed sills in stilling basins Bull. Faculty Eng. Assiut University 29(1): 13-24.

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