Abstract

Hydraulic Jump is a subjective process affected by substantive conditions; in this phenomenon part of flow kinetic energy changes into potential energy. The effect of substantive condition such as prismatic sill under sluice gate is studied experimentally by changing the sill height four times and compared with a jump without sill. The location of occurrence, total length, relative sequence depth and relative energy loss are the properties of the jump which are investigated. The investigation leads that sill under the gate increases energy loss up to 10%. The energy loss increase as sill slope increase and decreases with the increase of relative sill high to jump location. While the relative sequence depth of jump increases with increase of relative sill high to jump location and decreases with the increase of sill slope. The relative location of jump occurrence to depth of flow after the jump decreases with increase of sill slope. Within the limitations of the present experimental work, four mathematical models of relationship predicting the properties of the jump suggested with adjusted R square more than 0.921.

Keywords:

Energy loss, froude number, jump location, sequent depth, sill height,

References

1. AboulAtta, N., G. Ezizah, N. Yousif and S. Fathy, 2011. Design of stilling basins using artificial roughness international. J. Civil Environ. Eng., 3(2): 65-71.
   
2. Afzal, N. and A. Bushra, 2002. Structure of turbulent hydraulic jump in trapezoidal channel. J. Hydraul. Res., 40(2): 205-214.
   CrossRef    
3. Alhamid, A.A. and A.M. Negm, 1996. Depth ratio of hydraulic jump in rectangular stilling basins. J. Hydraul. Res., 34(4): 597-604.
   CrossRef    
4. Alikhani, A., R. Behrozi-Rad and M. Fathi-Moghadam, 2010. Hydraulic jump in stilling basin with vertical end sill. Int. J. Phys. Sci., 5(1): 025-029.
   
5. Bejestan, M.S. and K. Neisi, 2009. Anew roughened bed hydraulic jump stilling basin. Asian J. Appl. Sci., 2(5): 436-445.
   CrossRef    
6. Bessaih, N. and A.B.A. Rezak, 2002. Effect of baffle block with sloping front face on the length of the jump. J. Civil Eng. Inst. Eng. Bangladesh, CE 30(2): 101-108.
   
7. Chow, V.T., 1959. Open-Channel Hydralic. McGraw-Hill Book Co., New York, pp: 395-396.
   
8. Debabeche, M. and B. Achour, 2007. Effect of sill in the hydraulic jump in a triangular channel. J. Hydraul. Res., 45(1): 135-139.
   CrossRef    
9. Ead, S.A. and N. Rajaratnam, 2002. Hydraulic jumps on corrugated beds. J. Hydraul. Eng-ASCE, 128(7): 656-663.
   CrossRef    
10. Elsebaie, I.H. and S. Shabayek, 2010a. Formation of hydraulic jumps on corrugated beds. Int. J. Civil Environ. Eng. IJCEE-IJENS, 10(1): 40-54.
    
11. Elsebaie, I.H. and S. Shabayek, 2010b. Formation of hydraulic jumps on corrugated beds. Int. J. Civil Environ. Eng. IJCEE-IJENS, 10(1): 37-47.
    
12. Esfahani, M.J.N. and M.S. Bejestan, 2012. Effect of roughness height on the length of B-jump at an abrupt drop. Int. Res. J. Appl. Basic Sci., 3(S): 2757-2762.
    
13. Hughes, C.W. and J. ErnestFlack, 1984. Hydraulic jump properties over a rough bed. J. hydraulic Eng. ASCE, 110(12): 1755-1771.
    CrossRef    
14. Imran, H.M. and S. Akib, 2013. A review of hydraulic jump properties in different channel bed conditions. Life Sci. J., 10(2): 126-130.
    
15. Izadjoo, F. and M. Shafai-Bejestan, 2007. Corrugated bed hydraulic jump stilling basin. J. Appl. Sci. Asian Netw. Sci. Inform., 7(8): 1164-1169.
    
16. Mohamed Ali, H.S., 1991. Effect of roughened-bed stilling basin on length of rectangular hydraulic jump. J. Hydraul. Eng-ASCE, 117: 83-93.
    CrossRef    
17. Nikmehr, S. and A. Tabebordbar, 2010. Hydraulic jumps on adverse slope in two cases of rough and smooth bed. Res. J. Appl. Sci. Eng. Technol., 2(1): 19-22.
    
18. Rajaratnam, N., 1961. Hydraulic jumps on rough beds. T. Eng. Inst. Canada, 11(A-2): 1-8.
    
19. Wu, S. and N. Rajaratnam, 1996. Transition from hydraulic jump to open channel flow. J. Hydraulic Eng. ASCE, 122(9): 526-528.
    CrossRef    
20. Yang, H., 2013. The case for being automatic: Introducing the automatic linear modeling (LINEAR) procedure in SPSS Statistics. Multiple Linear Regression Viewpoint, 39(2): 27-37.
    

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