Evaluation of step’s slope on energy dissipation in stepped spillway

  • Authors

    • Ali Heidari
    • Poria Ghasemi Shahrekord University
    2014-10-12
    https://doi.org/10.14419/ijet.v3i4.3561

  • Stepped spillways are kind of dissipative structures used in rivers with steep slopes to reduce the flow energy and also the scouring potential of water. This dissipation is caused through diffusion along the spillway. The reduction of energy also leads to optimize the still basin geometry and performance downstream, and thus make the project more economic. In this paper, the hydraulic behaviour of stepped spillway is investigated based on kinetic energy. The results show that the average mean kinetic energy decreases upon an appraise in steps‘s slope. Finally, horizontal steps are proposed.

    Keywords: Stepped Spillway, Mean Kinetic Energy, Dissipation, and Steps’s Slope.

  • References

    1. Roshan, R., Azamathulla, H. Md., Marosi, M., Sarkardeh, H., Pahlavan, H., Ab Ghani, A., (2010), "Hydraulics of stepped spillways with different numbers of steps". Journal of Dams and Reservoirs, Vol. 20, No.3, pp 131-136 http://dx.doi.org/10.1680/dare.2010.20.3.131.
    2. Dermawan, V., Anwar, N., Edijanto, (2010), "Hydraulic model of Flow Conditions on Stepped Spillways due to number of Steps". International Journal of Academic Research, Vol. 2, No. 5, pp. 775-784.
    3. Chafi. C., Hazzab. A., Seddini. A. (2010) "Study of Flow and Energy Dissipation in Stepped Spillways" Jordan Journal of Civil Engineering, Volume 4.
    4. Aras.E, Berkun.M (2010) "spillway effects on stream reaeration" Gumushane University, Department of Civil Engineering, Gumushane 29100, Turkey, Karadeniz Technical University, Department of Civil Engineering, Trabzon 61080, Turkey, Water Research Commission (WRC).
    5. F.A. Bombardelli, I. Meireles, J. Matos, Laboratory measurements and multi-block numerical simulations of the mean flow and turbulence in the non-aerated skimming flow region of steep stepped spillways, Environ. Fluid Mech., 11 (3) (2010), pp. 263–288 http://dx.doi.org/10.1007/s10652-010-9188-6.

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  • How to Cite

    Heidari, A., & Ghasemi, P. (2014). Evaluation of step’s slope on energy dissipation in stepped spillway. International Journal of Engineering & Technology, 3(4), 501-505. https://doi.org/10.14419/ijet.v3i4.3561