Sediment Investigation at the 30° Water Intake

  • Mehdi Karami-Moghaddam
  • Mahmood Shafai-Bejestan
  • Hossein Sedghi
Part of the Geoplanet: Earth and Planetary Sciences book series (GEPS, volume 1)


The main goal of this study is to investigate sediment delivery to an intake from trapezoidal canal. Suspended sediment feed upstream of a lateral intake is studied under different flow conditions. Intake angle was taken as 30° on a side of trapezoidal flume. It was found that the flow patterns at the upstream of the intake have been modified in such a way that more water from surface layers is diverted as compared to the case of intake from a rectangular flume. Therefore, less suspended sediment enters the intake. Also it was found that in all tests, the amount of sediment that enters the intake reaches its minimum value at Froude number between 0.35 and 0.4.


Main Channel Froude Number Suspended Load Sediment Delivery Diversion Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors are grateful to the Water Resources Management Company of Iran, Department of Applied Researches, for their financial support to this study.


  1. Abassi AA, Ghodsian M, Habibi M, Neishabouri AAS (2002) Experimental investigation on sediment control in lateral intake using sill. In: Proceeding of the 13th IAHR-APD congress, vol 1, Singapore, pp 230–233Google Scholar
  2. Barkdoll BD, Ettema R, Odgaard AJ (1999) Sediment control at lateral diversions: limits and enhancements to vane use. J Hydraul Eng, ASCE 125(8):826–870Google Scholar
  3. Grace JL, Priest MS (1958) Division of flow in open channel junctions. Bulletin no. 31. Engineering experimental Station, Alabama Polytechnic Institute, AuburnGoogle Scholar
  4. Hager WH (1984) An approximate treatment of flow in branches and bends. Proc Inst Mech Eng 198C(4):63–69Google Scholar
  5. Hager WH (1992) Discussion of ‘Dividing flow in open channels’ by A. S. Ramamurthy, D. M. Tran, and L. B. Carballada. J Hydraul Eng 118(4):634–637CrossRefGoogle Scholar
  6. Hasanpour F (2006) On the behavior of the lateral intakes in the presence of composite submerged vanes and sill. Ph.D. thesis, College of Agriculture, Tarbiat Modares University, Tehran, IranGoogle Scholar
  7. Huang J, Weber LJ, Lai YG (2002) Three-dimensional numerical study of flows in open-channel junctions. J Hydraul Eng 128(3):268–280CrossRefGoogle Scholar
  8. Karami Moghadam M, Shafai Bajestan M, Sedghi H (2010) An experimental and numerical investigation at a 30 degree water intake in main channel with trapezoidal and rectangular section. J Sci Technol Agric Nat Resour (Isfahan University Technology, under publishing)Google Scholar
  9. Law SW, Reynolds AJ (1966) Dividing flow in an open channel. J Hydraul Div 92(2):4730–4736Google Scholar
  10. Murota A (1958) On the flow characteristics of a channel with a distributory. Technology Reports of the Osaka University, Japan, 6(198)Google Scholar
  11. Neary VS, Odgaard AJ (1993) Three-dimensional flow structure at open-channel diversions. J Hydraul Eng, ASCE 119(11):1223–1230CrossRefGoogle Scholar
  12. Neary VS, Sotiropoulos F, Odgaard AJ (1999) Threedimensional numerical model of lateral-intake inflows. J Hydraul Eng 125(2):126–140CrossRefGoogle Scholar
  13. Novak P, Moffat A, Nalluri C (1990) Hydraulic structures. Pitman, London, p 546Google Scholar
  14. Ramamurthy AS, Junying Qu, Diep Vo (2007) Numerical and experimental study of dividing open-channel flows. J Hydraul Eng, ASCE 133(10):1135–1144CrossRefGoogle Scholar
  15. Raudkivi AJ (1993) Sedimentation, exclusion and removal of sediment from diverted water – IAHR hydraulic structures design manual, No. 6. A.A. Balkema, RotterdamGoogle Scholar
  16. Razvan E (1989) River intake and diversion dams. Elsevier Science, New YorkGoogle Scholar
  17. Schoklitsch A (1937) Hydraulic structures, vol 2 (trans: Shulits S). American Society of mechanical Engineers, New York, pp 722–751Google Scholar
  18. Shafai Bajestan M, Nazari S (1999) The impression of the diversion angle of intake on the entering sediments to the lateral intakes at the vertical bond of river. J Agric Chamran Univ 22(1):47–66Google Scholar
  19. Tanaka K (1957) The improvement of the inlet of the Power Canal. Transactions of the Seventh General Meeting of I.A.H.R., 1, 17Google Scholar
  20. Taylor E (1944) Flow characteristics at rectangular open channel junctions. Trans ASCE 109:893–912Google Scholar
  21. Thomson M (1949) Theoretical hydrodynamics. McMillan & Co, LondonGoogle Scholar
  22. Weber LJ, Schumate ED, Mawer N (2001) Experiments on flow at a 90° open-channel junction. J Hydraul Eng 127(5):340–350CrossRefGoogle Scholar
  23. Yang F, Chen H, Guo J (2009) Study on “diversion angle effect” of lateral intake flow. 13th IAHR Congress, Vancouver, CanadaGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Mehdi Karami-Moghaddam
    • 1
  • Mahmood Shafai-Bejestan
    • 2
  • Hossein Sedghi
    • 1
  1. 1.Department of Water Engineering, Science and Research BranchIslamic Azad University (IAU)TehranIran
  2. 2.College of Water Science and EngineeringShahid Chamran UniversityAhwazIran

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