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The effect of barrier on the hydraulic response of composite weir-gate structure

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The composite weir-gate structure is considered an important hydraulic structure. This is because of its widely used in civil engineering hydraulic works especially in an irrigation system to measure, control, divert and keep the required water level. This study focuses on the influence of barrier existence on the hydraulic parameters that described the hydraulic characteristics of composite weir-gate hydraulic structure. In this study, several experimental runs were conducted to determine the effect of barrier's location, spacing and number on the water level and depth at the downstream region of flume, discharge coefficient of composite hydraulic structure, and flow rate throughout the flume. Our experiments indicated that the turbulence intensity, inlet effect, and position, gap, and number of barriers have affected the hydraulic behavior of weir-gate structure. This appears clearly by obtaining different results of discharge coefficient and flow rate that cross the weir-gate structure comparing with same cases without barriers. Also this study gives some insights on the significance roles of fluid separation, eddies generation near the barrier, fluid resistance and overlap between overflow and underflow velocities and their effects on hydraulic factors that dominate the problem. These hydraulic factors must be considered in the design and construction of barrier/barriers in open channel to prevent any fluctuation or drop in discharge, water elevation and the required water depth at downstream region.
Rocznik
Strony
97--118
Opis fizyczny
Bibliogr. 21 poz., il., tab.
Twórcy
  • Basrah Engineering Technical College, Southern Technical University
  • Basrah Engineering Technical College, Southern Technical University
  • Civil Engineering Department, College of Engineering, University of Basrah
Bibliografia
  • 1. A. A. M .Negm, A. M. Al-Brahim, and A. A. Alhamid, "Combined-free flow over weirs and below gates", Journal of Hydraulic Research, 40, 359–365, 2002.
  • 2. F.Y. Chen, and S. Ikeda, ''Horizontal separation flows in shallow open channels with spur dikes'', Journal of Hydroscience and Hydraulic Engineering, 15, 15– 30, 1997.
  • 3. H. Jamshidnia, Y. Takeda, and B. Firoozabadi, "Effect of a standing baffle on the flow structure in a rectangular open channel", Journal of Hydraulic Research 48, 400-404, 2010.
  • 4. I. Kimura, and T. Hosoda, "3-D unsteady flow structures around rectangular column in open channels by means of non-linear k-ε model", Proceedings of 1st International Symposium on Turbulence and Shear Flow Phenomena, Santa Barbara, California, USA, 1001-1006, 1999.
  • 5. M. Arie and H. Rouse, ''Experiments on two-dimensional flow over a normal wall'', Journal of Fluid Mechanics 1, 129-141, 1956.
  • 6. M. Michiue, and O. Hinokidani, "Calculation of 2-dimensional bed evolution around spur-dike", Annu. Journal of Hydraulic Engineering, Japan Soc. Civ. Eng., 36, 61-66, 1992.
  • 7. N. Muneta, and Y. Shimizu, "Numerical model with spur-dike considering the vertical velocity distribution", Proc., Japan Society of Civil Engineers Conf., Tokyo 497, 31-39, 1994.
  • 8. N. Rajaratnam and K. Subramanya, "Flow Equation for the Sluice Gate", Journal of Irrigation and Drainage Engineering, 93, 167-186, 1967.
  • 9. P. Novak, A. I. B. Moffat, C. Nalluri, and R. Narayanan, Hydraulic Structures. Taylor and Francis, Fourth Edition, 2007.
  • 10. P. K. Swamee, "Sluice-gate discharge equations", Journal of Irrigation and Drainage Engineering, 118, 56-60, 1992.
  • 11. R. D. Davinroy, R. C. Gordon, and R. D. Hetrick, Sedimentation study of the Mississippi River, Marquette Chute: Hydraulic micromodel investigation, Tech. Rep. M3, Applied River Engineering Center, St. Louis District, U. S. Army Corps of Engineers, St. Louis, 1998.
  • 12. R. Ettema, and M. Muste, "Scale-effect trends on flow thalweg and flow separation at dikes in flatbed channels", IIHR Rep. 414, IIHR–Hydroscience and Engineering, The Univ. of Iowa, Iowa City, Iowa, 2002.
  • 13. R. Ettema and M. Muste, ''Scale effects in flume experiments on flow around a spur dike in flat bed channel'', Journal of Hydraulic Engineering 130, 635-646, 2004.
  • 14. R. Mayerle, F. M. Toro, and S. S. Wang, "Verification of a three dimensional numerical model simulation of the flow in the vicinity of spur dikes", Journal of Hydraulic Research 33, 243-256, 1995.
  • 15. R. M. Qasim, I. A. Abdulhussein, M. A. Hameed, and Q. A. Maatooq, "Experimental study of coupled parabolic weir over Flow and gate under flow rate", Journal of Information Engineering & Application, 8, 34-42, 2018.
  • 16. S. Ouillon and D. Dartus, "Three-dimensional computation of flow around groyne", Journal of Hydraulic Engineering 123, 962-970, 1997.
  • 17. T. Tingsanchali, and S. Maheswaran, "2-D depth-averaged flow computation near groyne", Journal of Hydraulic Engineering 16, 71-86, 1990.
  • 18. V. L. Streeter, and E. B, Wylie, Fluid Mechanics. First SI Metric Edition, 1983.
  • 19. Y. Jia and S. S. Wang, "3D numerical simulation of flow near a spur dike", Proceedings of 1st International Conference on Hydro-Science and Engineering, Washington, D.C., 2150-2156, 1993.
  • 20. JCGM 100:2008, Evaluation of measurement data-Guide to the expression of uncertainty in measurement, GUM 1995 with minor corrections, International Bureau of Weight and Measures (BIPM), Sérres, France, 2008.
  • 21. H. W. Coleman and W. G. Steele, Experimentation, Validation, and Uncertainty Analysis for Engineers, 3rd edn., Wiley, Hoboken, NJ, 2009.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-48a9acdf-8fd2-4c60-82b8-f2242e52478b
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